GLSA-200710-18 : util-linux: Local privilege escalation

2007-10-19T00:00:00
ID GENTOO_GLSA-200710-18.NASL
Type nessus
Reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
Modified 2020-10-02T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-200710-18 (util-linux: Local privilege escalation)

Ludwig Nussel discovered that the check_special_mountprog() and
check_special_umountprog() functions call setuid() and setgid() in the
wrong order and do not check the return values, which can lead to
privileges being dropped improperly.

Impact :

A local attacker may be able to exploit this vulnerability by using
mount helpers such as the mount.nfs program to gain root privileges and
run arbitrary commands.

Workaround :

There is no known workaround at this time.

                                        
                                            #%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 200710-18.
#
# 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(27516);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:44");

  script_cve_id("CVE-2007-5191");
  script_xref(name:"GLSA", value:"200710-18");

  script_name(english:"GLSA-200710-18 : util-linux: 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-200710-18
(util-linux: Local privilege escalation)

    Ludwig Nussel discovered that the check_special_mountprog() and
    check_special_umountprog() functions call setuid() and setgid() in the
    wrong order and do not check the return values, which can lead to
    privileges being dropped improperly.
  
Impact :

    A local attacker may be able to exploit this vulnerability by using
    mount helpers such as the mount.nfs program to gain root privileges and
    run arbitrary commands.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200710-18"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All util-linux users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=sys-apps/util-linux-2.12r-r8'"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(264);

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

  script_set_attribute(attribute:"patch_publication_date", value:"2007/10/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 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:"sys-apps/util-linux", unaffected:make_list("ge 2.12r-r8"), vulnerable:make_list("lt 2.12r-r8"))) 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, "util-linux");
}