Vulnerabilities > CVE-2011-1004 - Link Following vulnerability in Ruby-Lang Ruby

047910
CVSS 6.3 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
ruby-lang
CWE-59
nessus
NVD
Published: 2011-03-02
Updated: 2012-05-12

Summary

The FileUtils.remove_entry_secure method in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, 1.8.8dev, 1.9.1 through 1.9.1-430, 1.9.2 through 1.9.2-136, and 1.9.3dev allows local users to delete arbitrary files via a symlink attack.

Vulnerable Configurations

Part Description Count
Application
Ruby-Lang
6

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Symlink Attack
    An attacker positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name. The endpoint file may be either output or input. If the file is output, the result is that the endpoint is modified, instead of a file at the intended location. Modifications to the endpoint file may include appending, overwriting, corrupting, changing permissions, or other modifications. In some variants of this attack the attacker may be able to control the change to a file while in other cases they cannot. The former is especially damaging since the attacker may be able to grant themselves increased privileges or insert false information, but the latter can also be damaging as it can expose sensitive information or corrupt or destroy vital system or application files. Alternatively, the endpoint file may serve as input to the targeted application. This can be used to feed malformed input into the target or to cause the target to process different information, possibly allowing the attacker to control the actions of the target or to cause the target to expose information to the attacker. Moreover, the actions taken on the endpoint file are undertaken with the permissions of the targeted user or application, which may exceed the permissions that the attacker would normally have.
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • 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 familyMacOS X Local Security Checks
    NASL idMACOSX_10_7_4.NASL
    descriptionThe remote host is running a version of Mac OS X 10.7.x that is prior to 10.7.4. The newer version contains numerous security-related fixes for the following components : - Login Window - Bluetooth - curl - HFS - Kernel - libarchive - libsecurity - libxml - LoginUIFramework - PHP - Quartz Composer - QuickTime - Ruby - Security Framework - Time Machine - X11 Note that this update addresses the recent FileVault password vulnerability, in which user passwords are stored in plaintext to a system-wide debug log if the legacy version of FileVault is used to encrypt user directories after a system upgrade to Lion. Since the patch only limits further exposure, though, we recommend that all users on the system change their passwords if user folders were encrypted using the legacy version of FileVault prior to and after an upgrade to OS X 10.7.
    last seen2020-06-01
    modified2020-06-02
    plugin id59066
    published2012-05-10
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/59066
    titleMac OS X 10.7.x < 10.7.4 Multiple Vulnerabilities (BEAST)
    code
    #
# (C) Tenable Network Security, Inc.
#


if (!defined_func("bn_random")) exit(0);
if (NASL_LEVEL < 3000) exit(0);    # Avoid problems with large number of xrefs.


include("compat.inc");


if (description)
{
  script_id(59066);
  script_version("1.27");
  script_cvs_date("Date: 2018/07/16 12:48:31");

  script_cve_id(
    "CVE-2011-1004",
    "CVE-2011-1005",
    "CVE-2011-1777",
    "CVE-2011-1778",
    "CVE-2011-1944",
    "CVE-2011-2821",
    "CVE-2011-2834",
    "CVE-2011-2895",
    "CVE-2011-3212",
    "CVE-2011-3389",
    "CVE-2011-3919",
    "CVE-2011-4566",
    "CVE-2011-4815",
    "CVE-2011-4885",
    "CVE-2012-0036",
    "CVE-2012-0642",
    "CVE-2012-0649",
    "CVE-2012-0652",
    "CVE-2012-0654",
    "CVE-2012-0655",
    "CVE-2012-0656",
    "CVE-2012-0657",
    "CVE-2012-0658",
    "CVE-2012-0659",
    "CVE-2012-0660",
    "CVE-2012-0661",
    "CVE-2012-0662",
    "CVE-2012-0675",
    "CVE-2012-0830"
  );
  script_bugtraq_id(
    46458,
    46460,
    47737,
    48056,
    49124,
    49279,
    49658,
    49778,
    50907,
    51193,
    51198,
    51300,
    51665,
    51830,
    52364,
    53456,
    53457,
    53459,
    53462,
    53465,
    53466,
    53467,
    53468,
    53469,
    53470,
    53471,
    53473
  );
  script_xref(name:"TRA", value:"TRA-2012-02");
  script_xref(name:"CERT", value:"864643");
  script_xref(name:"ZDI", value:"ZDI-12-135");

  script_name(english:"Mac OS X 10.7.x < 10.7.4 Multiple Vulnerabilities (BEAST)");
  script_summary(english:"Check the version of Mac OS X.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote host is missing a Mac OS X update that fixes several
security issues."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is running a version of Mac OS X 10.7.x that is prior
to 10.7.4. The newer version contains numerous security-related fixes
for the following components :

  - Login Window
  - Bluetooth
  - curl
  - HFS
  - Kernel
  - libarchive
  - libsecurity
  - libxml
  - LoginUIFramework
  - PHP
  - Quartz Composer
  - QuickTime
  - Ruby
  - Security Framework
  - Time Machine
  - X11

Note that this update addresses the recent FileVault password
vulnerability, in which user passwords are stored in plaintext to a
system-wide debug log if the legacy version of FileVault is used to
encrypt user directories after a system upgrade to Lion. Since the
patch only limits further exposure, though, we recommend that all
users on the system change their passwords if user folders were
encrypted using the legacy version of FileVault prior to and after an
upgrade to OS X 10.7."
  );
  script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/research/tra-2012-02");
  script_set_attribute(attribute:"see_also", value:"http://support.apple.com/kb/HT5281");
  script_set_attribute(attribute:"see_also", value:"http://lists.apple.com/archives/security-announce/2012/May/msg00001.html");
  script_set_attribute(attribute:"see_also", value:"http://www.zerodayinitiative.com/advisories/ZDI-12-135");
  script_set_attribute(attribute:"see_also", value:"http://seclists.org/fulldisclosure/2012/Aug/64");
  script_set_attribute(attribute:"see_also", value:"https://www.imperialviolet.org/2011/09/23/chromeandbeast.html");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/~bodo/tls-cbc.txt");
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade to Mac OS X 10.7.4 or later."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/02/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/05/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/05/10");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_end_attributes();
 
  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");
 
  script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl");

  exit(0);
}

os = get_kb_item("Host/MacOSX/Version");
if (!os)
{
  os = get_kb_item("Host/OS");
  if (isnull(os)) exit(0, "The 'Host/OS' KB item is missing.");
  if ("Mac OS X" >!< os) exit(0, "The host does not appear to be running Mac OS X.");

  c = get_kb_item("Host/OS/Confidence");
  if (c <= 70) exit(1, "Can't determine the host's OS with sufficient confidence.");
}
if (!os) exit(0, "The host does not appear to be running Mac OS X.");


if (ereg(pattern:"Mac OS X 10\.7($|\.[0-3]([^0-9]|$))", string:os)) security_hole(0);
else exit(0, "The host is not affected as it is running "+os+".");
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2011-0909.NASL
    descriptionFrom Red Hat Security Advisory 2011:0909 : Updated ruby packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) It was found that WEBrick (the Ruby HTTP server toolkit) did not filter terminal escape sequences from its log files. A remote attacker could use specially crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. (CVE-2009-4492) A cross-site scripting (XSS) flaw was found in the way WEBrick displayed error pages. A remote attacker could use this flaw to perform a cross-site scripting attack against victims by tricking them into visiting a specially crafted URL. (CVE-2010-0541) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 and CVE-2010-0541 issues. All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id68298
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/68298
    titleOracle Linux 5 : ruby (ELSA-2011-0909)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2011:0909 and 
# Oracle Linux Security Advisory ELSA-2011-0909 respectively.
#

include("compat.inc");

if (description)
{
  script_id(68298);
  script_version("1.9");
  script_cvs_date("Date: 2019/10/25 13:36:09");

  script_cve_id("CVE-2009-4492", "CVE-2010-0541", "CVE-2011-0188", "CVE-2011-1004", "CVE-2011-1005");
  script_bugtraq_id(37710, 40895, 46458, 46460, 46966);
  script_xref(name:"RHSA", value:"2011:0909");

  script_name(english:"Oracle Linux 5 : ruby (ELSA-2011-0909)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2011:0909 :

Updated ruby packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting
language. It has features to process text files and to do system
management tasks.

A flaw was found in the way large amounts of memory were allocated on
64-bit systems when using the BigDecimal class. A context-dependent
attacker could use this flaw to cause memory corruption, causing a
Ruby application that uses the BigDecimal class to crash or, possibly,
execute arbitrary code. This issue did not affect 32-bit systems.
(CVE-2011-0188)

A race condition flaw was found in the remove system entries method in
the FileUtils module. If a local user ran a Ruby script that uses this
method, a local attacker could use this flaw to delete arbitrary files
and directories accessible to that user via a symbolic link attack.
(CVE-2011-1004)

It was found that WEBrick (the Ruby HTTP server toolkit) did not
filter terminal escape sequences from its log files. A remote attacker
could use specially crafted HTTP requests to inject terminal escape
sequences into the WEBrick log files. If a victim viewed the log files
with a terminal emulator, it could result in control characters being
executed with the privileges of that user. (CVE-2009-4492)

A cross-site scripting (XSS) flaw was found in the way WEBrick
displayed error pages. A remote attacker could use this flaw to
perform a cross-site scripting attack against victims by tricking them
into visiting a specially crafted URL. (CVE-2010-0541)

A flaw was found in the method for translating an exception message
into a string in the Exception class. A remote attacker could use this
flaw to bypass safe level 4 restrictions, allowing untrusted (tainted)
code to modify arbitrary, trusted (untainted) strings, which safe
level 4 restrictions would otherwise prevent. (CVE-2011-1005)

Red Hat would like to thank Drew Yao of Apple Product Security for
reporting the CVE-2011-0188 and CVE-2010-0541 issues.

All Ruby users should upgrade to these updated packages, which contain
backported patches to resolve these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-June/002211.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected ruby packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-mode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-ri");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ruby-tcltk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/01/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/06/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 5", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL5", reference:"ruby-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-devel-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-docs-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-irb-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-libs-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-mode-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-rdoc-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-ri-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"EL5", reference:"ruby-tcltk-1.8.5-19.el5_6.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby / ruby-devel / ruby-docs / ruby-irb / ruby-libs / ruby-mode / etc");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1377-1.NASL
    descriptionDrew Yao discovered that the WEBrick HTTP server was vulnerable to cross-site scripting attacks when displaying error pages. A remote attacker could use this flaw to run arbitrary web script. (CVE-2010-0541) Drew Yao discovered that Ruby
    last seen2020-06-01
    modified2020-06-02
    plugin id58146
    published2012-02-28
    reporterUbuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/58146
    titleUbuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : ruby1.8 vulnerabilities (USN-1377-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1377-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(58146);
  script_version("1.10");
  script_cvs_date("Date: 2019/09/19 12:54:27");

  script_cve_id("CVE-2010-0541", "CVE-2011-0188", "CVE-2011-1004", "CVE-2011-1005", "CVE-2011-2686", "CVE-2011-2705", "CVE-2011-4815");
  script_bugtraq_id(40895, 46458, 46460, 46966, 49015, 51198);
  script_xref(name:"USN", value:"1377-1");

  script_name(english:"Ubuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : ruby1.8 vulnerabilities (USN-1377-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Drew Yao discovered that the WEBrick HTTP server was vulnerable to
cross-site scripting attacks when displaying error pages. A remote
attacker could use this flaw to run arbitrary web script.
(CVE-2010-0541)

Drew Yao discovered that Ruby's BigDecimal module did not properly
allocate memory on 64-bit platforms. An attacker could use this flaw
to cause a denial of service or possibly execute arbitrary code with
user privileges. (CVE-2011-0188)

Nicholas Jefferson discovered that the FileUtils.remove_entry_secure
method in Ruby did not properly remove non-empty directories. An
attacker could use this flaw to possibly delete arbitrary files.
(CVE-2011-1004)

It was discovered that Ruby incorrectly allowed untainted strings to
be modified in protective safe levels. An attacker could use this flaw
to bypass intended access restrictions. (CVE-2011-1005)

Eric Wong discovered that Ruby does not properly reseed its
pseudorandom number generator when creating child processes. An
attacker could use this flaw to gain knowledge of the random numbers
used in other Ruby child processes. (CVE-2011-2686)

Eric Wong discovered that the SecureRandom module in Ruby did not
properly seed its pseudorandom number generator. An attacker could use
this flaw to gain knowledge of the random numbers used by another Ruby
process with the same process ID number. (CVE-2011-2705)

Alexander Klink and Julian Walde discovered that Ruby computed hash
values without restricting the ability to trigger hash collisions
predictably. A remote attacker could cause a denial of service by
crafting values used in hash tables. (CVE-2011-4815).

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/1377-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libruby1.8 and / or ruby1.8 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/06/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/02/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(10\.04|10\.10|11\.04|11\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 10.10 / 11.04 / 11.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"10.04", pkgname:"libruby1.8", pkgver:"1.8.7.249-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"ruby1.8", pkgver:"1.8.7.249-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libruby1.8", pkgver:"1.8.7.299-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"ruby1.8", pkgver:"1.8.7.299-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"libruby1.8", pkgver:"1.8.7.302-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"ruby1.8", pkgver:"1.8.7.302-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"libruby1.8", pkgver:"1.8.7.352-2ubuntu0.1")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"ruby1.8", pkgver:"1.8.7.352-2ubuntu0.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libruby1.8 / ruby1.8");
}
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-0909.NASL
    descriptionUpdated ruby packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) It was found that WEBrick (the Ruby HTTP server toolkit) did not filter terminal escape sequences from its log files. A remote attacker could use specially crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. (CVE-2009-4492) A cross-site scripting (XSS) flaw was found in the way WEBrick displayed error pages. A remote attacker could use this flaw to perform a cross-site scripting attack against victims by tricking them into visiting a specially crafted URL. (CVE-2010-0541) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 and CVE-2010-0541 issues. All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id55451
    published2011-06-29
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55451
    titleRHEL 5 : ruby (RHSA-2011:0909)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2011:0909. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(55451);
  script_version ("1.18");
  script_cvs_date("Date: 2019/10/25 13:36:16");

  script_cve_id("CVE-2009-4492", "CVE-2010-0541", "CVE-2011-0188", "CVE-2011-1004", "CVE-2011-1005");
  script_bugtraq_id(37710, 40895, 46458, 46460, 46966);
  script_xref(name:"RHSA", value:"2011:0909");

  script_name(english:"RHEL 5 : ruby (RHSA-2011:0909)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated ruby packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting
language. It has features to process text files and to do system
management tasks.

A flaw was found in the way large amounts of memory were allocated on
64-bit systems when using the BigDecimal class. A context-dependent
attacker could use this flaw to cause memory corruption, causing a
Ruby application that uses the BigDecimal class to crash or, possibly,
execute arbitrary code. This issue did not affect 32-bit systems.
(CVE-2011-0188)

A race condition flaw was found in the remove system entries method in
the FileUtils module. If a local user ran a Ruby script that uses this
method, a local attacker could use this flaw to delete arbitrary files
and directories accessible to that user via a symbolic link attack.
(CVE-2011-1004)

It was found that WEBrick (the Ruby HTTP server toolkit) did not
filter terminal escape sequences from its log files. A remote attacker
could use specially crafted HTTP requests to inject terminal escape
sequences into the WEBrick log files. If a victim viewed the log files
with a terminal emulator, it could result in control characters being
executed with the privileges of that user. (CVE-2009-4492)

A cross-site scripting (XSS) flaw was found in the way WEBrick
displayed error pages. A remote attacker could use this flaw to
perform a cross-site scripting attack against victims by tricking them
into visiting a specially crafted URL. (CVE-2010-0541)

A flaw was found in the method for translating an exception message
into a string in the Exception class. A remote attacker could use this
flaw to bypass safe level 4 restrictions, allowing untrusted (tainted)
code to modify arbitrary, trusted (untainted) strings, which safe
level 4 restrictions would otherwise prevent. (CVE-2011-1005)

Red Hat would like to thank Drew Yao of Apple Product Security for
reporting the CVE-2011-0188 and CVE-2010-0541 issues.

All Ruby users should upgrade to these updated packages, which contain
backported patches to resolve these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2009-4492"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2010-0541"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-0188"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-1004"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-1005"
  );
  # http://www.ruby-lang.org/en/news/2011/02/18/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cd9c4d00"
  );
  # http://www.ruby-lang.org/en/news/2011/02/18/exception-methods-can-bypass-safe/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?763c3e42"
  );
  # http://www.ruby-lang.org/en/news/2010/01/10/webrick-escape-sequence-injection/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d0dcbc41"
  );
  # http://www.ruby-lang.org/en/news/2010/08/16/xss-in-webrick-cve-2010-0541/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?608f461e"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2011:0909"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-mode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-ri");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-tcltk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5.6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/01/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/06/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2011:0909";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", reference:"ruby-devel-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-docs-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-docs-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-docs-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-irb-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-irb-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-irb-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", reference:"ruby-libs-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-mode-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-mode-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-mode-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-rdoc-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-rdoc-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-rdoc-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-ri-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-ri-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-ri-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"ruby-tcltk-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"ruby-tcltk-1.8.5-19.el5_6.1")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"ruby-tcltk-1.8.5-19.el5_6.1")) flag++;


  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby / ruby-devel / ruby-docs / ruby-irb / ruby-libs / ruby-mode / etc");
  }
}
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20110628_RUBY_ON_SL5_X.NASL
    descriptionRuby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) It was found that WEBrick (the Ruby HTTP server toolkit) did not filter terminal escape sequences from its log files. A remote attacker could use specially crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. (CVE-2009-4492) A cross-site scripting (XSS) flaw was found in the way WEBrick displayed error pages. A remote attacker could use this flaw to perform a cross-site scripting attack against victims by tricking them into visiting a specially crafted URL. (CVE-2010-0541) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id61076
    published2012-08-01
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/61076
    titleScientific Linux Security Update : ruby on SL5.x i386/x86_64
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(61076);
  script_version("1.5");
  script_cvs_date("Date: 2019/10/25 13:36:19");

  script_cve_id("CVE-2009-4492", "CVE-2010-0541", "CVE-2011-0188", "CVE-2011-1004", "CVE-2011-1005");

  script_name(english:"Scientific Linux Security Update : ruby on SL5.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Ruby is an extensible, interpreted, object-oriented, scripting
language. It has features to process text files and to do system
management tasks.

A flaw was found in the way large amounts of memory were allocated on
64-bit systems when using the BigDecimal class. A context-dependent
attacker could use this flaw to cause memory corruption, causing a
Ruby application that uses the BigDecimal class to crash or, possibly,
execute arbitrary code. This issue did not affect 32-bit systems.
(CVE-2011-0188)

A race condition flaw was found in the remove system entries method in
the FileUtils module. If a local user ran a Ruby script that uses this
method, a local attacker could use this flaw to delete arbitrary files
and directories accessible to that user via a symbolic link attack.
(CVE-2011-1004)

It was found that WEBrick (the Ruby HTTP server toolkit) did not
filter terminal escape sequences from its log files. A remote attacker
could use specially crafted HTTP requests to inject terminal escape
sequences into the WEBrick log files. If a victim viewed the log files
with a terminal emulator, it could result in control characters being
executed with the privileges of that user. (CVE-2009-4492)

A cross-site scripting (XSS) flaw was found in the way WEBrick
displayed error pages. A remote attacker could use this flaw to
perform a cross-site scripting attack against victims by tricking them
into visiting a specially crafted URL. (CVE-2010-0541)

A flaw was found in the method for translating an exception message
into a string in the Exception class. A remote attacker could use this
flaw to bypass safe level 4 restrictions, allowing untrusted (tainted)
code to modify arbitrary, trusted (untainted) strings, which safe
level 4 restrictions would otherwise prevent. (CVE-2011-1005)

All Ruby users should upgrade to these updated packages, which contain
backported patches to resolve these issues."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1106&L=scientific-linux-errata&T=0&P=5232
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?681a527a"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/06/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL5", reference:"ruby-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-devel-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-docs-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-irb-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-libs-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-mode-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-rdoc-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-ri-1.8.5-19.el5_6.1")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-tcltk-1.8.5-19.el5_6.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20110628_RUBY_ON_SL6_X.NASL
    descriptionRuby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id61077
    published2012-08-01
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/61077
    titleScientific Linux Security Update : ruby on SL6.x i386/x86_64
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2011-0910.NASL
    descriptionFrom Red Hat Security Advisory 2011:0910 : Updated ruby packages that fix three security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 issue. All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id68299
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/68299
    titleOracle Linux 6 : ruby (ELSA-2011-0910)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2011-0909.NASL
    descriptionUpdated ruby packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) It was found that WEBrick (the Ruby HTTP server toolkit) did not filter terminal escape sequences from its log files. A remote attacker could use specially crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. (CVE-2009-4492) A cross-site scripting (XSS) flaw was found in the way WEBrick displayed error pages. A remote attacker could use this flaw to perform a cross-site scripting attack against victims by tricking them into visiting a specially crafted URL. (CVE-2010-0541) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 and CVE-2010-0541 issues. All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id67085
    published2013-06-29
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/67085
    titleCentOS 5 : ruby (CESA-2011:0909)
  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_SECUPD2012-002.NASL
    descriptionThe remote host is running a version of Mac OS X 10.6 that does not have Security Update 2012-002 applied. This update contains multiple security-related fixes for the following components : - curl - Directory Service - ImageIO - libarchive - libsecurity - libxml - Quartz Composer - QuickTime - Ruby - Samba - Security Framework
    last seen2020-06-01
    modified2020-06-02
    plugin id59067
    published2012-05-10
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/59067
    titleMac OS X Multiple Vulnerabilities (Security Update 2012-002) (BEAST)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201412-27.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201412-27 (Ruby: Denial of Service) Multiple vulnerabilities have been discovered in Ruby. Please review the CVE identifiers referenced below for details. Impact : A context-dependent attacker could possibly execute arbitrary code with the privileges of the process, cause a Denial of Service condition, or bypass security restrictions. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id79980
    published2014-12-15
    reporterThis script is Copyright (C) 2014-2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/79980
    titleGLSA-201412-27 : Ruby: Denial of Service
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-0910.NASL
    descriptionUpdated ruby packages that fix three security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. (CVE-2011-0188) A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. (CVE-2011-1004) A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005) Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 issue. All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id55452
    published2011-06-29
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55452
    titleRHEL 6 : ruby (RHSA-2011:0910)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2011-1913.NASL
    descriptionTwo patches backported from 1.8.7 branch, for - Symlink race condition in FileUtils.remove_entry_secure - bypass of $SAFE mechanism in Exception#to_s Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id52485
    published2011-03-02
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/52485
    titleFedora 13 : ruby-1.8.6.420-2.fc13 (2011-1913)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_3_RUBY-110517.NASL
    descriptionRuby was prone to several security issues : - a race condition allowed local users to delete arbitrary files (CVE-2011-1004) - exception methods could bypass safe mode (CVE-2011-1005) - webrick cross site scripting issue (CVE-2010-0541) - memory corruption in the BigDecimal class (CVE-2011-0188)
    last seen2020-06-01
    modified2020-06-02
    plugin id75729
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75729
    titleopenSUSE Security Update : ruby (openSUSE-SU-2011:0561-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_RUBY-110517.NASL
    descriptionThe following several security issues of ruby have been fixed : - A race condition allowing local users to delete arbitrary files. (CVE-2011-1004) - Exception methods could bypass safe mode. (CVE-2011-1005) - webrick does not sanitize non-printable characters in log. (CVE-2009-4492) - A webrick cross-site scripting issue. (CVE-2010-0541) - A memory corruption in the BigDecimal class (CVE-2011-0188)
    last seen2020-06-01
    modified2020-06-02
    plugin id54921
    published2011-05-31
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/54921
    titleSuSE 11.1 Security Update : ruby (SAT Patch Number 4585)
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2011-097.NASL
    descriptionMultiple vulnerabilities have been identified and fixed in ruby : Cross-site scripting (XSS) vulnerability in the WEBrick HTTP server in Ruby allows remote attackers to inject arbitrary web script or HTML via a crafted URI that triggers a UTF-7 error page (CVE-2010-0541). The FileUtils.remove_entry_secure method in Ruby allows local users to delete arbitrary files via a symlink attack (CVE-2011-1004). The safe-level feature in Ruby allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname (CVE-2011-1005). The VpMemAlloc function in bigdecimal.c in the BigDecimal class in Ruby does not properly allocate memory, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via vectors involving creation of a large BigDecimal value within a 64-bit process, related to an integer truncation issue. (CVE-2011-0188). Packages for 2009.0 are provided as of the Extended Maintenance Program. Please visit this link to learn more: http://store.mandriva.com/product_info.php?cPath=149 products_id=490 The updated packages have been patched to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id54626
    published2011-05-24
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/54626
    titleMandriva Linux Security Advisory : ruby (MDVSA-2011:097)

Redhat

advisories
  • rhsa
    idRHSA-2011:0909
  • rhsa
    idRHSA-2011:0910
rpms
  • ruby-0:1.8.5-19.el5_6.1
  • ruby-debuginfo-0:1.8.5-19.el5_6.1
  • ruby-devel-0:1.8.5-19.el5_6.1
  • ruby-docs-0:1.8.5-19.el5_6.1
  • ruby-irb-0:1.8.5-19.el5_6.1
  • ruby-libs-0:1.8.5-19.el5_6.1
  • ruby-mode-0:1.8.5-19.el5_6.1
  • ruby-rdoc-0:1.8.5-19.el5_6.1
  • ruby-ri-0:1.8.5-19.el5_6.1
  • ruby-tcltk-0:1.8.5-19.el5_6.1
  • ruby-0:1.8.7.299-7.el6_1.1
  • ruby-debuginfo-0:1.8.7.299-7.el6_1.1
  • ruby-devel-0:1.8.7.299-7.el6_1.1
  • ruby-docs-0:1.8.7.299-7.el6_1.1
  • ruby-irb-0:1.8.7.299-7.el6_1.1
  • ruby-libs-0:1.8.7.299-7.el6_1.1
  • ruby-rdoc-0:1.8.7.299-7.el6_1.1
  • ruby-ri-0:1.8.7.299-7.el6_1.1
  • ruby-static-0:1.8.7.299-7.el6_1.1
  • ruby-tcltk-0:1.8.7.299-7.el6_1.1

References