GLSA-201110-15 : GnuPG: User-assisted execution of arbitrary code

2011-10-24T00:00:00
ID GENTOO_GLSA-201110-15.NASL
Type nessus
Reporter This script is Copyright (C) 2011-2020 Tenable Network Security, Inc.
Modified 2011-10-24T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-201110-15 (GnuPG: User-assisted execution of arbitrary code)

The GPGSM utility in GnuPG contains a use-after-free vulnerability that
  may be exploited when importing a crafted X.509 certificate explicitly or
  during the signature verification process.

Impact :

An unauthenticated remote attacker may execute arbitrary code with the
  privileges of the user running GnuPG by enticing them to import a crafted
  certificate.

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 201110-15.
#
# 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(56590);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/09/24");

  script_cve_id("CVE-2010-2547");
  script_bugtraq_id(41945);
  script_xref(name:"GLSA", value:"201110-15");

  script_name(english:"GLSA-201110-15 : GnuPG: User-assisted execution of arbitrary code");
  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-201110-15
(GnuPG: User-assisted execution of arbitrary code)

    The GPGSM utility in GnuPG contains a use-after-free vulnerability that
      may be exploited when importing a crafted X.509 certificate explicitly or
      during the signature verification process.
  
Impact :

    An unauthenticated remote attacker may execute arbitrary code with the
      privileges of the user running GnuPG by enticing them to import a crafted
      certificate.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201110-15"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All GnuPG 2.x users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=app-crypt/gnupg-2.0.16-r1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2020 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-crypt/gnupg", unaffected:make_list("ge 2.0.16-r1", "lt 2.0"), vulnerable:make_list("lt 2.0.16-r1"))) 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, "GnuPG");
}