Vulnerabilities > CVE-2012-2085 - Code Injection vulnerability in Gajim

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
gajim
CWE-94
nessus

Summary

The exec_command function in common/helpers.py in Gajim before 0.15 allows user-assisted remote attackers to execute arbitrary commands via shell metacharacters in an href attribute.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • 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 User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Nessus

  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201208-04.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201208-04 (Gajim: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Gajim. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to open a specially crafted link using Gajim, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Furthermore, a remote attacker could use a specially crafted Jabber ID, possibly resulting in execution of arbitrary SQL statements. A local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id61543
    published2012-08-15
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/61543
    titleGLSA-201208-04 : Gajim: Multiple vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201208-04.
    #
    # The advisory text is Copyright (C) 2001-2015 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(61543);
      script_version("1.8");
      script_cvs_date("Date: 2018/07/11 17:09:26");
    
      script_cve_id("CVE-2012-2085", "CVE-2012-2086", "CVE-2012-2093");
      script_bugtraq_id(52943, 53017);
      script_xref(name:"GLSA", value:"201208-04");
    
      script_name(english:"GLSA-201208-04 : Gajim: Multiple vulnerabilities");
      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-201208-04
    (Gajim: Multiple vulnerabilities)
    
        Multiple vulnerabilities have been discovered in Gajim. Please review
          the CVE identifiers referenced below for details.
      
    Impact :
    
        A remote attacker could entice a user to open a specially crafted link
          using Gajim, possibly resulting in execution of arbitrary code with the
          privileges of the process or a Denial of Service condition. Furthermore,
          a remote attacker could use a specially crafted Jabber ID, possibly
          resulting in execution of arbitrary SQL statements.
        A local attacker could perform symlink attacks to overwrite arbitrary
          files with the privileges of the user running the application.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201208-04"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Gajim users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=net-im/gajim-0.15-r1'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_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:gentoo:linux:gajim");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2012/08/14");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/15");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");
      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:"net-im/gajim", unaffected:make_list("ge 0.15-r1"), vulnerable:make_list("lt 0.15-r1"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Gajim");
    }
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2453.NASL
    descriptionSeveral vulnerabilities have been discovered in Gajim, a feature-rich Jabber client. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2012-1987 Gajim is not properly sanitizing input before passing it to shell commands. An attacker can use this flaw to execute arbitrary code on behalf of the victim if the user e.g. clicks on a specially crafted URL in an instant message. - CVE-2012-2093 Gajim is using predictable temporary files in an insecure manner when converting instant messages containing LaTeX to images. A local attacker can use this flaw to conduct symlink attacks and overwrite files the victim has write access to. - CVE-2012-2086 Gajim is not properly sanitizing input when logging conversations which results in the possibility to conduct SQL injection attacks.
    last seen2020-03-17
    modified2012-04-17
    plugin id58766
    published2012-04-17
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/58766
    titleDebian DSA-2453-1 : gajim - several vulnerabilities
    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-2453. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(58766);
      script_version("1.11");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2012-2085", "CVE-2012-2086", "CVE-2012-2093");
      script_bugtraq_id(52943);
      script_xref(name:"DSA", value:"2453");
    
      script_name(english:"Debian DSA-2453-1 : gajim - several vulnerabilities");
      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:
    "Several vulnerabilities have been discovered in Gajim, a feature-rich
    Jabber client. The Common Vulnerabilities and Exposures project
    identifies the following problems :
    
      - CVE-2012-1987
        Gajim is not properly sanitizing input before passing it
        to shell commands. An attacker can use this flaw to
        execute arbitrary code on behalf of the victim if the
        user e.g. clicks on a specially crafted URL in an
        instant message.
    
      - CVE-2012-2093
        Gajim is using predictable temporary files in an
        insecure manner when converting instant messages
        containing LaTeX to images. A local attacker can use
        this flaw to conduct symlink attacks and overwrite files
        the victim has write access to.
    
      - CVE-2012-2086
        Gajim is not properly sanitizing input when logging
        conversations which results in the possibility to
        conduct SQL injection attacks."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=668038"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/CVE-2012-1987"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/CVE-2012-2093"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/CVE-2012-2086"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/squeeze/gajim"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2012/dsa-2453"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the gajim packages.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 0.13.4-3+squeeze3."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E: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:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gajim");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2012/04/16");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/04/17");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2020 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:"6.0", prefix:"gajim", reference:"0.13.4-3+squeeze3")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");