GLSA-201203-06 : sudo: Privilege escalation

2012-03-06T00:00:00
ID GENTOO_GLSA-201203-06.NASL
Type nessus
Reporter Tenable
Modified 2016-09-13T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-201203-06 (sudo: Privilege escalation)

Two vulnerabilities have been discovered in sudo:
  When the sudoers file is configured with a Runas group, sudo does not         prompt for a password when changing to the new group (CVE-2011-0010).
  A format string vulnerability exists in the 'sudo_debug()' function         (CVE-2012-0809).

Impact :

A local attacker could possibly gain the ability to run arbitrary       commands with the privileges of other users or groups, including root.

Workaround :

There is no known workaround at this time.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201203-06.
#
# The advisory text is Copyright (C) 2001-2016 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(58216);
  script_version("$Revision: 1.5 $");
  script_cvs_date("$Date: 2016/09/13 16:58:11 $");

  script_cve_id("CVE-2011-0010", "CVE-2012-0809");
  script_bugtraq_id(45774, 51719);
  script_xref(name:"GLSA", value:"201203-06");

  script_name(english:"GLSA-201203-06 : sudo: 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-201203-06
(sudo: Privilege escalation)

    Two vulnerabilities have been discovered in sudo:
      When the sudoers file is configured with a Runas group, sudo does not
        prompt for a password when changing to the new group (CVE-2011-0010).
      A format string vulnerability exists in the 'sudo_debug()' function
        (CVE-2012-0809).
  
Impact :

    A local attacker could possibly gain the ability to run arbitrary
      commands with the privileges of other users or groups, including root.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201203-06"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All sudo users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=app-admin/sudo-1.8.3_p2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  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:"exploited_by_malware", value:"true");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2012/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/03/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2016 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-admin/sudo", unaffected:make_list("ge 1.8.3_p2", "rge 1.7.4_p5"), vulnerable:make_list("lt 1.8.3_p2"))) 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, "sudo");
}