Vulnerabilities > CVE-2009-1144 - Code Injection vulnerability in multiple products

047910
CVSS 6.9 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE

Summary

Untrusted search path vulnerability in the Gentoo package of Xpdf before 3.02-r2 allows local users to gain privileges via a Trojan horse xpdfrc file in the current working directory, related to an unset SYSTEM_XPDFRC macro in a Gentoo build process that uses the poppler library.

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-200904-07.NASL
descriptionThe remote host is affected by the vulnerability described in GLSA-200904-07 (Xpdf: Untrusted search path) Erik Wallin reported that Gentoo
last seen2020-06-01
modified2020-06-02
plugin id36095
published2009-04-07
reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/36095
titleGLSA-200904-07 : Xpdf: Untrusted search path
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200904-07.
#
# 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(36095);
  script_version("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:45");

  script_cve_id("CVE-2009-1144");
  script_xref(name:"GLSA", value:"200904-07");

  script_name(english:"GLSA-200904-07 : Xpdf: Untrusted search path");
  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-200904-07
(Xpdf: Untrusted search path)

    Erik Wallin reported that Gentoo's Xpdf attempts to read the 'xpdfrc'
    file from the current working directory if it cannot find a '.xpdfrc'
    file in the user's home directory. This is caused by a missing
    definition of the SYSTEM_XPDFRC macro when compiling a repackaged
    version of Xpdf.
  
Impact :

    A local attacker could entice a user to run 'xpdf' from a directory
    containing a specially crafted 'xpdfrc' file, resulting in the
    execution of arbitrary code when attempting to, e.g., print a file.
  
Workaround :

    Do not run Xpdf from untrusted working directories."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200904-07"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Xpdf users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-text/xpdf-3.02-r2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(94);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xpdf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/04/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 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:"app-text/xpdf", unaffected:make_list("ge 3.02-r2"), vulnerable:make_list("lt 3.02-r2"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xpdf");
}