Vulnerabilities > CVE-2014-0476 - Improper Input Validation vulnerability in multiple products
Attack vector
LOCAL Attack complexity
HIGH Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
The slapper function in chkrootkit before 0.50 does not properly quote file paths, which allows local users to execute arbitrary code via a Trojan horse executable. NOTE: this is only a vulnerability when /tmp is not mounted with the noexec option.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 | |
OS | 4 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
Exploit-Db
description chkrootkit 0.49 - Local Root Vulnerability. CVE-2014-0476. Local exploit for linux platform id EDB-ID:33899 last seen 2016-02-03 modified 2014-06-28 published 2014-06-28 reporter Thomas Stangner source https://www.exploit-db.com/download/33899/ title chkrootkit 0.49 - Local Root Vulnerability description Chkrootkit Local Privilege Escalation. CVE-2014-0476. Local exploit for linux platform file exploits/linux/local/38775.rb id EDB-ID:38775 last seen 2016-02-04 modified 2015-11-20 platform linux port published 2015-11-20 reporter metasploit source https://www.exploit-db.com/download/38775/ title Chkrootkit Local Privilege Escalation type local
Metasploit
description | Chkrootkit before 0.50 will run any executable file named /tmp/update as root, allowing a trivial privilege escalation. WfsDelay is set to 24h, since this is how often a chkrootkit scan is scheduled by default. |
id | MSF:EXPLOIT/UNIX/LOCAL/CHKROOTKIT |
last seen | 2020-06-06 |
modified | 2018-09-15 |
published | 2015-11-18 |
references | |
reporter | Rapid7 |
source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/unix/local/chkrootkit.rb |
title | Chkrootkit Local Privilege Escalation |
Nessus
NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2014-370.NASL description A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges. last seen 2020-06-01 modified 2020-06-02 plugin id 78313 published 2014-10-12 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/78313 title Amazon Linux AMI : chkrootkit (ALAS-2014-370) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Amazon Linux AMI Security Advisory ALAS-2014-370. # include("compat.inc"); if (description) { script_id(78313); script_version("1.5"); script_cvs_date("Date: 2018/04/18 15:09:35"); script_cve_id("CVE-2014-0476"); script_xref(name:"ALAS", value:"2014-370"); script_name(english:"Amazon Linux AMI : chkrootkit (ALAS-2014-370)"); script_summary(english:"Checks rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Amazon Linux AMI host is missing a security update." ); script_set_attribute( attribute:"description", value: "A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges." ); script_set_attribute( attribute:"see_also", value:"https://alas.aws.amazon.com/ALAS-2014-370.html" ); script_set_attribute( attribute:"solution", value:"Run 'yum update chkrootkit' to update your system." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:chkrootkit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:chkrootkit-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2014/07/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/12"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc."); script_family(english:"Amazon Linux Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release"); if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux"); os_ver = pregmatch(pattern: "^AL(A|\d)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux"); os_ver = os_ver[1]; if (os_ver != "A") { if (os_ver == 'A') os_ver = 'AMI'; audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver); } if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (rpm_check(release:"ALA", reference:"chkrootkit-0.49-9.8.amzn1")) flag++; if (rpm_check(release:"ALA", reference:"chkrootkit-debuginfo-0.49-9.8.amzn1")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "chkrootkit / chkrootkit-debuginfo"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2945.NASL description Thomas Stangner discovered a vulnerability in chkrootkit, a rootkit detector, which may allow local attackers to gain root access when /tmp is mounted without the noexec option. last seen 2020-03-17 modified 2014-06-04 plugin id 74294 published 2014-06-04 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74294 title Debian DSA-2945-1 : chkrootkit - security update code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-2945. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(74294); script_version("1.8"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2014-0476"); script_xref(name:"DSA", value:"2945"); script_name(english:"Debian DSA-2945-1 : chkrootkit - security update"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Thomas Stangner discovered a vulnerability in chkrootkit, a rootkit detector, which may allow local attackers to gain root access when /tmp is mounted without the noexec option." ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/wheezy/chkrootkit" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2014/dsa-2945" ); script_set_attribute( attribute:"solution", value: "Upgrade the chkrootkit packages. For the stable distribution (wheezy), this problem has been fixed in version 0.49-4.1+deb7u2." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chkrootkit"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/03"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/04"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"7.0", prefix:"chkrootkit", reference:"0.49-4.1+deb7u2")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:deb_report_get()); else security_note(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Fedora Local Security Checks NASL id FEDORA_2014-7071.NASL description A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges. 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 seen 2020-03-17 modified 2014-06-13 plugin id 74500 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74500 title Fedora 20 : chkrootkit-0.49-9.fc20 (2014-7071) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2014-7071. # include("compat.inc"); if (description) { script_id(74500); script_version("1.8"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2014-0476"); script_bugtraq_id(67813); script_xref(name:"FEDORA", value:"2014-7071"); script_name(english:"Fedora 20 : chkrootkit-0.49-9.fc20 (2014-7071)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges. 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." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1104456" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1104457" ); # https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134326.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?cd61f626" ); script_set_attribute( attribute:"solution", value:"Update the affected chkrootkit package." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:chkrootkit"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "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) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC20", reference:"chkrootkit-0.49-9.fc20")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "chkrootkit"); }
NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2014-122.NASL description Updated chkrootkit package fixes security vulnerability : The chkrootkit script contains a flaw that allows a local attacker to create an executable in /tmp that will be run by the user running chkrootkit (usually root), allowing the attacker to escalate privileges (CVE-2014-0476). last seen 2020-06-01 modified 2020-06-02 plugin id 74480 published 2014-06-12 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74480 title Mandriva Linux Security Advisory : chkrootkit (MDVSA-2014:122) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Mandriva Linux Security Advisory MDVSA-2014:122. # The text itself is copyright (C) Mandriva S.A. # include("compat.inc"); if (description) { script_id(74480); script_version("1.6"); script_cvs_date("Date: 2019/08/02 13:32:56"); script_cve_id("CVE-2014-0476"); script_bugtraq_id(67813); script_xref(name:"MDVSA", value:"2014:122"); script_name(english:"Mandriva Linux Security Advisory : chkrootkit (MDVSA-2014:122)"); script_summary(english:"Checks rpm output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Mandriva Linux host is missing a security update." ); script_set_attribute( attribute:"description", value: "Updated chkrootkit package fixes security vulnerability : The chkrootkit script contains a flaw that allows a local attacker to create an executable in /tmp that will be run by the user running chkrootkit (usually root), allowing the attacker to escalate privileges (CVE-2014-0476)." ); script_set_attribute( attribute:"see_also", value:"http://advisories.mageia.org/MGASA-2014-0249.html" ); script_set_attribute( attribute:"solution", value:"Update the affected chkrootkit package." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:chkrootkit"); script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/11"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/12"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Mandriva Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/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/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux"); if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu); flag = 0; if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"chkrootkit-0.49-6.1.mbs1")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2230-1.NASL description Thomas Stangner discovered that chkrootkit incorrectly quoted certain values. A local attacker could use this issue to execute arbitrary code when chkrootkit is run and gain root privileges. 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 74322 published 2014-06-05 reporter Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74322 title Ubuntu 10.04 LTS / 12.04 LTS / 13.10 / 14.04 LTS : chkrootkit vulnerability (USN-2230-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-2230-1. 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(74322); script_version("1.9"); script_cvs_date("Date: 2019/09/19 12:54:30"); script_cve_id("CVE-2014-0476"); script_bugtraq_id(67813); script_xref(name:"USN", value:"2230-1"); script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 13.10 / 14.04 LTS : chkrootkit vulnerability (USN-2230-1)"); script_summary(english:"Checks dpkg output for updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Ubuntu host is missing a security-related patch." ); script_set_attribute( attribute:"description", value: "Thomas Stangner discovered that chkrootkit incorrectly quoted certain values. A local attacker could use this issue to execute arbitrary code when chkrootkit is run and gain root privileges. 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/2230-1/" ); script_set_attribute( attribute:"solution", value:"Update the affected chkrootkit package." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:chkrootkit"); 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:12.04:-:lts"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04"); script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/25"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/04"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/05"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 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|12\.04|13\.10|14\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 12.04 / 13.10 / 14.04", "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:"chkrootkit", pkgver:"0.49-3ubuntu0.1")) flag++; if (ubuntu_check(osver:"12.04", pkgname:"chkrootkit", pkgver:"0.49-4ubuntu1.1")) flag++; if (ubuntu_check(osver:"13.10", pkgname:"chkrootkit", pkgver:"0.49-4.1ubuntu1.13.10.1")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"chkrootkit", pkgver:"0.49-4.1ubuntu1.14.04.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_NOTE, 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, "chkrootkit"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2014-7090.NASL description A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges. 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 seen 2020-03-17 modified 2014-06-13 plugin id 74502 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74502 title Fedora 19 : chkrootkit-0.49-9.fc19 (2014-7090) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2014-7090. # include("compat.inc"); if (description) { script_id(74502); script_version("1.8"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2014-0476"); script_bugtraq_id(67813); script_xref(name:"FEDORA", value:"2014-7090"); script_name(english:"Fedora 19 : chkrootkit-0.49-9.fc19 (2014-7090)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "A quoting issue was found in chkrootkit which would lead to a file in /tmp/ being executed, if /tmp/ was mounted without the noexec option. chkrootkit is typically run as the root user. A local attacker could use this flaw to escalate their privileges. 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." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1104456" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1104457" ); # https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134341.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?96585382" ); script_set_attribute( attribute:"solution", value:"Update the affected chkrootkit package." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:chkrootkit"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:19"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "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) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^19([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 19.x", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC19", reference:"chkrootkit-0.49-9.fc19")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "chkrootkit"); }
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201709-05.NASL description The remote host is affected by the vulnerability described in GLSA-201709-05 (chkrootkit: Local privilege escalation) When /tmp is mounted without the noexec option chkrootkit will execute files in /tmp with root privileges. Impact : A local attacker could possibly execute arbitrary code with root privileges. Workaround : Users should mount /tmp with noexec option. last seen 2020-06-01 modified 2020-06-02 plugin id 103273 published 2017-09-18 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103273 title GLSA-201709-05 : chkrootkit: Local privilege escalation code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201709-05. # # The advisory text is Copyright (C) 2001-2017 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(103273); script_version("3.3"); script_cvs_date("Date: 2019/04/10 16:10:17"); script_cve_id("CVE-2014-0476"); script_xref(name:"GLSA", value:"201709-05"); script_name(english:"GLSA-201709-05 : chkrootkit: Local privilege escalation"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-201709-05 (chkrootkit: Local privilege escalation) When /tmp is mounted without the noexec option chkrootkit will execute files in /tmp with root privileges. Impact : A local attacker could possibly execute arbitrary code with root privileges. Workaround : Users should mount /tmp with noexec option." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201709-05" ); script_set_attribute( attribute:"solution", value: "All chkrootkit users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=app-forensics/chkrootkit-0.50'" ); script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:F/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:"metasploit_name", value:'Chkrootkit Local Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:chkrootkit"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2017/09/17"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/18"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"app-forensics/chkrootkit", unaffected:make_list("ge 0.50"), vulnerable:make_list("lt 0.50"))) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:qpkg_report_get()); else security_note(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "chkrootkit"); }
Packetstorm
data source | https://packetstormsecurity.com/files/download/134484/chkrootkit.rb.txt |
id | PACKETSTORM:134484 |
last seen | 2016-12-05 |
published | 2015-11-20 |
reporter | Thomas Stangner |
source | https://packetstormsecurity.com/files/134484/Chkrootkit-Local-Privilege-Escalation.html |
title | Chkrootkit Local Privilege Escalation |
The Hacker News
id | THN:B13AEDC0DAC18F19211BE2B4BE0C4787 |
last seen | 2018-01-27 |
modified | 2014-06-07 |
published | 2014-06-07 |
reporter | Swati Khandelwal |
source | https://thehackernews.com/2014/06/linux-kernel-vulnerable-to-privilege_7.html |
title | Linux Kernel Vulnerable to Privilege Escalation and DoS Attack |
References
- http://osvdb.org/show/osvdb/107710
- http://packetstormsecurity.com/files/134484/Chkrootkit-Local-Privilege-Escalation.html
- http://www.chkrootkit.org/
- http://www.debian.org/security/2014/dsa-2945
- http://www.openwall.com/lists/oss-security/2014/06/04/9
- http://www.ubuntu.com/usn/USN-2230-1
- https://security.gentoo.org/glsa/201709-05
- https://www.exploit-db.com/exploits/38775/