Vulnerabilities > CVE-2018-1000079 - Path Traversal vulnerability in Rubygems
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Relative Path Traversal An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
- Directory Traversal An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
- File System Function Injection, Content Based An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
- Using Slashes and URL Encoding Combined to Bypass Validation Logic This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
- Manipulating Input to File System Calls An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
Nessus
NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0221_RUBY.NASL description The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has ruby packages installed that are affected by multiple vulnerabilities: - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure. (CVE-2018-8778) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed. (CVE-2018-8780) - Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument. (CVE-2018-6914) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption). (CVE-2018-8777) - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick. (CVE-2017-17742) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079) - An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats. (CVE-2018-16396) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket. (CVE-2018-8779) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 131412 published 2019-12-02 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/131412 title NewStart CGSL CORE 5.04 / MAIN 5.04 : ruby Multiple Vulnerabilities (NS-SA-2019-0221) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from ZTE advisory NS-SA-2019-0221. The text # itself is copyright (C) ZTE, Inc. include("compat.inc"); if (description) { script_id(131412); script_version("1.2"); script_cvs_date("Date: 2019/12/04"); script_cve_id( "CVE-2017-17742", "CVE-2018-6914", "CVE-2018-8777", "CVE-2018-8778", "CVE-2018-8779", "CVE-2018-8780", "CVE-2018-16396", "CVE-2018-1000073", "CVE-2018-1000074", "CVE-2018-1000075", "CVE-2018-1000076", "CVE-2018-1000077", "CVE-2018-1000078", "CVE-2018-1000079" ); script_bugtraq_id( 103683, 103684, 103686, 103693, 103739, 103767, 105955 ); script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : ruby Multiple Vulnerabilities (NS-SA-2019-0221)"); script_set_attribute(attribute:"synopsis", value: "The remote machine is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has ruby packages installed that are affected by multiple vulnerabilities: - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure. (CVE-2018-8778) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed. (CVE-2018-8780) - Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument. (CVE-2018-6914) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption). (CVE-2018-8777) - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick. (CVE-2017-17742) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079) - An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats. (CVE-2018-16396) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket. (CVE-2018-8779) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number."); script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0221"); script_set_attribute(attribute:"solution", value: "Upgrade the vulnerable CGSL ruby packages. Note that updated packages may not be available yet. Please contact ZTE for more information."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-8780"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/13"); script_set_attribute(attribute:"patch_publication_date", value:"2019/11/22"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/02"); script_set_attribute(attribute:"plugin_type", value:"local"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"NewStart CGSL Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/ZTE-CGSL/release"); if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux"); if (release !~ "CGSL CORE 5.04" && release !~ "CGSL MAIN 5.04") audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04'); if (!get_kb_item("Host/ZTE-CGSL/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu); flag = 0; pkgs = { "CGSL CORE 5.04": [ "ruby-2.0.0.648-36.el7", "ruby-debuginfo-2.0.0.648-36.el7", "ruby-devel-2.0.0.648-36.el7", "ruby-doc-2.0.0.648-36.el7", "ruby-irb-2.0.0.648-36.el7", "ruby-libs-2.0.0.648-36.el7", "ruby-tcltk-2.0.0.648-36.el7", "rubygem-bigdecimal-1.2.0-36.el7", "rubygem-io-console-0.4.2-36.el7", "rubygem-json-1.7.7-36.el7", "rubygem-minitest-4.3.2-36.el7", "rubygem-psych-2.0.0-36.el7", "rubygem-rake-0.9.6-36.el7", "rubygem-rdoc-4.0.0-36.el7", "rubygems-2.0.14.1-36.el7", "rubygems-devel-2.0.14.1-36.el7" ], "CGSL MAIN 5.04": [ "ruby-2.0.0.648-36.el7", "ruby-debuginfo-2.0.0.648-36.el7", "ruby-devel-2.0.0.648-36.el7", "ruby-doc-2.0.0.648-36.el7", "ruby-irb-2.0.0.648-36.el7", "ruby-libs-2.0.0.648-36.el7", "ruby-tcltk-2.0.0.648-36.el7", "rubygem-bigdecimal-1.2.0-36.el7", "rubygem-io-console-0.4.2-36.el7", "rubygem-json-1.7.7-36.el7", "rubygem-minitest-4.3.2-36.el7", "rubygem-psych-2.0.0-36.el7", "rubygem-rake-0.9.6-36.el7", "rubygem-rdoc-4.0.0-36.el7", "rubygems-2.0.14.1-36.el7", "rubygems-devel-2.0.14.1-36.el7" ] }; pkg_list = pkgs[release]; foreach (pkg in pkg_list) if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby"); }NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2230.NASL description According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.(CVE-2016-7798) - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.(CVE-2017-17742) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000073) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000074) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000077) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000078) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000079) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-08 modified 2019-11-08 plugin id 130692 published 2019-11-08 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130692 title EulerOS 2.0 SP5 : ruby (EulerOS-SA-2019-2230) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2018-983.NASL description Path traversal when writing to a symlinked basedir outside of the root RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073) Improper verification of signatures in tarball allows to install mis-signed gem : RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076) Infinite loop vulnerability due to negative size in tar header causes Denial of Service RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075) Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution : The last seen 2020-06-01 modified 2020-06-02 plugin id 109136 published 2018-04-18 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109136 title Amazon Linux 2 : ruby (ALAS-2018-983) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-1804-1.NASL description This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues : Changes in ruby2.5 : Update to 2.5.5 and 2.5.4 : https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/ Security issues fixed : CVE-2019-8320: Delete directory using symlink when decompressing tar (bsc#1130627) CVE-2019-8321: Escape sequence injection vulnerability in verbose (bsc#1130623) CVE-2019-8322: Escape sequence injection vulnerability in gem owner (bsc#1130622) CVE-2019-8323: Escape sequence injection vulnerability in API response handling (bsc#1130620) CVE-2019-8324: Installing a malicious gem may lead to arbitrary code execution (bsc#1130617) CVE-2019-8325: Escape sequence injection vulnerability in errors (bsc#1130611) Ruby 2.5 was updated to 2.5.3 : This release includes some bug fixes and some security fixes. Security issues fixed: CVE-2018-16396: Tainted flags are not propagated in Array#pack and String#unpack with some directives (bsc#1112532) CVE-2018-16395: OpenSSL::X509::Name equality check does not work correctly (bsc#1112530) Ruby 2.5 was updated to 2.5.1 : This release includes some bug fixes and some security fixes. Security issues fixed: CVE-2017-17742: HTTP response splitting in WEBrick (bsc#1087434) CVE-2018-6914: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (bsc#1087441) CVE-2018-8777: DoS by large request in WEBrick (bsc#1087436) CVE-2018-8778: Buffer under-read in String#unpack (bsc#1087433) CVE-2018-8779: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket (bsc#1087440) CVE-2018-8780: Unintentional directory traversal by poisoned NUL byte in Dir (bsc#1087437) Multiple vulnerabilities in RubyGems were fixed : - CVE-2018-1000079: Fixed path traversal issue during gem installation allows to write to arbitrary filesystem locations (bsc#1082058) - CVE-2018-1000075: Fixed infinite loop vulnerability due to negative size in tar header causes Denial of Service (bsc#1082014) - CVE-2018-1000078: Fixed XSS vulnerability in homepage attribute when displayed via gem server (bsc#1082011) - CVE-2018-1000077: Fixed that missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (bsc#1082010) - CVE-2018-1000076: Fixed improper verification of signatures in tarball allows to install mis-signed gem (bsc#1082009) - CVE-2018-1000074: Fixed unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (bsc#1082008) - CVE-2018-1000073: Fixed path traversal when writing to a symlinked basedir outside of the root (bsc#1082007) Other changes: Fixed Net::POPMail methods modify frozen literal when using default arg ruby: change over of the Japanese Era to the new emperor May 1st 2019 (bsc#1133790) build with PIE support (bsc#1130028) Changes in ruby-bundled-gems-rpmhelper: Add a new helper for bundled ruby gems. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 126617 published 2019-07-11 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126617 title SUSE SLED15 / SLES15 Security Update : ruby-bundled-gems-rpmhelper, ruby2.5 (SUSE-SU-2019:1804-1) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-0542.NASL description An update for ruby is now available for Red Hat Enterprise Linux 7.5 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fix(es) : * ruby: DoS by large request in WEBrick (CVE-2018-8777) * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. last seen 2020-03-18 modified 2020-02-19 plugin id 133785 published 2020-02-19 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133785 title RHEL 7 : ruby (RHSA-2020:0542) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2250.NASL description According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.(CVE-2017-17742) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000073) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000074) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000077) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000078) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000079) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-08 modified 2019-11-08 plugin id 130712 published 2019-11-08 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130712 title EulerOS 2.0 SP3 : ruby (EulerOS-SA-2019-2250) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-2028.NASL description An update for ruby is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fix(es) : * ruby: HTTP response splitting in WEBrick (CVE-2017-17742) * ruby: DoS by large request in WEBrick (CVE-2018-8777) * ruby: Buffer under-read in String#unpack (CVE-2018-8778) * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) * ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives (CVE-2018-16396) * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) * ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (CVE-2018-6914) * ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779) * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 127649 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127649 title RHEL 7 : ruby (RHSA-2019:2028) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2018-983.NASL description Path traversal when writing to a symlinked basedir outside of the root RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073) Improper verification of signatures in tarball allows to install mis-signed gem : RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076) Infinite loop vulnerability due to negative size in tar header causes Denial of Service RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075) Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution : The last seen 2020-06-01 modified 2020-06-02 plugin id 108846 published 2018-04-06 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108846 title Amazon Linux AMI : ruby20 / ruby22,ruby23,ruby24 (ALAS-2018-983) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0245_RUBY.NASL description The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has ruby packages installed that are affected by multiple vulnerabilities: - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure. (CVE-2018-8778) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed. (CVE-2018-8780) - Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument. (CVE-2018-6914) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption). (CVE-2018-8777) - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick. (CVE-2017-17742) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079) - An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats. (CVE-2018-16396) - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket. (CVE-2018-8779) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076) - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 132492 published 2019-12-31 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132492 title NewStart CGSL CORE 5.05 / MAIN 5.05 : ruby Multiple Vulnerabilities (NS-SA-2019-0245) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-0591.NASL description An update for ruby is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fix(es) : * ruby: DoS by large request in WEBrick (CVE-2018-8777) * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. last seen 2020-03-18 modified 2020-02-26 plugin id 134063 published 2020-02-26 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134063 title RHEL 7 : ruby (RHSA-2020:0591) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2019-1276.NASL description It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory. (CVE-2018-8777) It was found that the tmpdir and tempfile modules did not sanitize their file name argument. An attacker with control over the name could create temporary files and directories outside of the dedicated directory. (CVE-2018-6914) It was found that WEBrick did not sanitize headers sent back to clients, resulting in a response-splitting vulnerability. An attacker, able to control the server last seen 2020-06-01 modified 2020-06-02 plugin id 128290 published 2019-08-28 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128290 title Amazon Linux 2 : ruby (ALAS-2019-1276) NASL family Scientific Linux Local Security Checks NASL id SL_20190806_RUBY_ON_SL7_X.NASL description Security Fix(es) : - ruby: HTTP response splitting in WEBrick (CVE-2017-17742) - ruby: DoS by large request in WEBrick (CVE-2018-8777) - ruby: Buffer under-read in String#unpack (CVE-2018-8778) - ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) - ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives (CVE-2018-16396) - rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) - rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) - rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) - rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) - rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) - rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) - ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (CVE-2018-6914) - ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779) - rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) last seen 2020-03-18 modified 2019-08-27 plugin id 128260 published 2019-08-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128260 title Scientific Linux Security Update : ruby on SL7.x x86_64 (20190806) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1195.NASL description According to the versions of the ruby packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.(CVE-2017-9229) - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.(CVE-2017-9227) - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it last seen 2020-03-19 modified 2020-03-13 plugin id 134484 published 2020-03-13 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134484 title EulerOS Virtualization for ARM 64 3.0.2.0 : ruby (EulerOS-SA-2020-1195) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1421.NASL description Multiple vulnerabilities were found in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following issues : CVE-2015-9096 SMTP command injection in Net::SMTP via CRLF sequences in a RCPT TO or MAIL FROM command. CVE-2016-2339 Exploitable heap overflow in Fiddle::Function.new. CVE-2016-7798 Incorrect handling of initialization vector in the GCM mode in the OpenSSL extension. CVE-2017-0898 Buffer underrun vulnerability in Kernel.sprintf. CVE-2017-0899 ANSI escape sequence vulnerability in RubyGems. CVE-2017-0900 DoS vulnerability in the RubyGems query command. CVE-2017-0901 gem installer allowed a malicious gem to overwrite arbitrary files. CVE-2017-0902 RubyGems DNS request hijacking vulnerability. CVE-2017-0903 Max Justicz reported that RubyGems is prone to an unsafe object deserialization vulnerability. When parsed by an application which processes gems, a specially crafted YAML formatted gem specification can lead to remote code execution. CVE-2017-10784 Yusuke Endoh discovered an escape sequence injection vulnerability in the Basic authentication of WEBrick. An attacker can take advantage of this flaw to inject malicious escape sequences to the WEBrick log and potentially execute control characters on the victim last seen 2020-06-01 modified 2020-06-02 plugin id 111081 published 2018-07-16 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111081 title Debian DLA-1421-1 : ruby2.1 security update NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2019-2028.NASL description An update for ruby is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fix(es) : * ruby: HTTP response splitting in WEBrick (CVE-2017-17742) * ruby: DoS by large request in WEBrick (CVE-2018-8777) * ruby: Buffer under-read in String#unpack (CVE-2018-8778) * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) * ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives (CVE-2018-16396) * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) * ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (CVE-2018-6914) * ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779) * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 128332 published 2019-08-30 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128332 title CentOS 7 : ruby (CESA-2019:2028) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3621-1.NASL description It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to access sensitive information. (CVE-2018-1000073) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000074) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2018-1000075) It was discovered that Ruby incorrectly handled certain crypto signatures. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 108879 published 2018-04-06 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108879 title Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities (USN-3621-1) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4219.NASL description Several vulnerabilities were discovered in jruby, a Java implementation of the Ruby programming language. They would allow an attacker to use specially crafted gem files to mount cross-site scripting attacks, cause denial of service through an infinite loop, write arbitrary files, or run malicious code. last seen 2020-06-01 modified 2020-06-02 plugin id 110418 published 2018-06-11 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110418 title Debian DSA-4219-1 : jruby - security update NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3621-2.NASL description USN-3621-1 fixed vulnerabilities in Ruby. The update caused an issue due to an incomplete patch for CVE-2018-1000074. This update reverts the problematic patch pending further investigation. We apologize for the inconvenience. Original advisory details : It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to access sensitive information. (CVE-2018-1000073) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000074) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2018-1000075) It was discovered that Ruby incorrectly handled certain crypto signatures. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 109058 published 2018-04-16 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109058 title Ubuntu 14.04 LTS : ruby1.9.1, ruby2.0 regression (USN-3621-2) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4259.NASL description Several vulnerabilities have been discovered in the interpreter for the Ruby language, which may result in incorrect processing of HTTP/FTP, directory traversal, command injection, unintended socket creation or information disclosure. This update also fixes several issues in RubyGems which could allow an attacker to use specially crafted gem files to mount cross-site scripting attacks, cause denial of service through an infinite loop, write arbitrary files, or run malicious code. last seen 2020-06-01 modified 2020-06-02 plugin id 111468 published 2018-08-02 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111468 title Debian DSA-4259-1 : ruby2.3 - security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-1771.NASL description This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues : Changes in ruby2.5 : Update to 2.5.5 and 2.5.4 : https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/ Security issues fixed : - CVE-2019-8320: Delete directory using symlink when decompressing tar (bsc#1130627) - CVE-2019-8321: Escape sequence injection vulnerability in verbose (bsc#1130623) - CVE-2019-8322: Escape sequence injection vulnerability in gem owner (bsc#1130622) - CVE-2019-8323: Escape sequence injection vulnerability in API response handling (bsc#1130620) - CVE-2019-8324: Installing a malicious gem may lead to arbitrary code execution (bsc#1130617) - CVE-2019-8325: Escape sequence injection vulnerability in errors (bsc#1130611) Ruby 2.5 was updated to 2.5.3 : This release includes some bug fixes and some security fixes. Security issues fixed : - CVE-2018-16396: Tainted flags are not propagated in Array#pack and String#unpack with some directives (bsc#1112532) - CVE-2018-16395: OpenSSL::X509::Name equality check does not work correctly (bsc#1112530) Ruby 2.5 was updated to 2.5.1 : This release includes some bug fixes and some security fixes. Security issues fixed : - CVE-2017-17742: HTTP response splitting in WEBrick (bsc#1087434) - CVE-2018-6914: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (bsc#1087441) - CVE-2018-8777: DoS by large request in WEBrick (bsc#1087436) - CVE-2018-8778: Buffer under-read in String#unpack (bsc#1087433) - CVE-2018-8779: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket (bsc#1087440) - CVE-2018-8780: Unintentional directory traversal by poisoned NUL byte in Dir (bsc#1087437) - Multiple vulnerabilities in RubyGems were fixed : - CVE-2018-1000079: Fixed path traversal issue during gem installation allows to write to arbitrary filesystem locations (bsc#1082058) - CVE-2018-1000075: Fixed infinite loop vulnerability due to negative size in tar header causes Denial of Service (bsc#1082014) - CVE-2018-1000078: Fixed XSS vulnerability in homepage attribute when displayed via gem server (bsc#1082011) - CVE-2018-1000077: Fixed that missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (bsc#1082010) - CVE-2018-1000076: Fixed improper verification of signatures in tarball allows to install mis-signed gem (bsc#1082009) - CVE-2018-1000074: Fixed unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (bsc#1082008) - CVE-2018-1000073: Fixed path traversal when writing to a symlinked basedir outside of the root (bsc#1082007) Other changes : - Fixed Net::POPMail methods modify frozen literal when using default arg - ruby: change over of the Japanese Era to the new emperor May 1st 2019 (bsc#1133790) - build with PIE support (bsc#1130028) Changes in ruby-bundled-gems-rpmhelper : - Add a new helper for bundled ruby gems. This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 126904 published 2019-07-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126904 title openSUSE Security Update : ruby-bundled-gems-rpmhelper / ruby2.5 (openSUSE-2019-1771) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-0663.NASL description An update for ruby is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fix(es) : * ruby: DoS by large request in WEBrick (CVE-2018-8777) * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780) * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073) * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074) * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076) * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077) * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078) * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079) * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. last seen 2020-03-19 modified 2020-03-06 plugin id 134261 published 2020-03-06 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134261 title RHEL 7 : ruby (RHSA-2020:0663) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1443.NASL description According to the versions of the ruby packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible.(CVE-2019-8321) - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.(CVE-2017-9229) - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.(CVE-2017-9227) - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it last seen 2020-04-30 modified 2020-04-16 plugin id 135605 published 2020-04-16 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135605 title EulerOS Virtualization 3.0.2.2 : ruby (EulerOS-SA-2020-1443)
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References
- https://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759
- https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099
- http://blog.rubygems.org/2018/02/15/2.7.6-released.html
- https://usn.ubuntu.com/3621-1/
- https://www.debian.org/security/2018/dsa-4219
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://www.debian.org/security/2018/dsa-4259
- https://access.redhat.com/errata/RHSA-2018:3731
- https://access.redhat.com/errata/RHSA-2018:3730
- https://access.redhat.com/errata/RHSA-2018:3729
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://access.redhat.com/errata/RHSA-2019:2028
- https://access.redhat.com/errata/RHSA-2020:0542
- https://access.redhat.com/errata/RHSA-2020:0591
- https://access.redhat.com/errata/RHSA-2020:0663