GLSA-200805-20 : GnuTLS: Execution of arbitrary code

2008-05-22T00:00:00
ID GENTOO_GLSA-200805-20.NASL
Type nessus
Reporter Tenable
Modified 2016-11-11T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-200805-20 (GnuTLS: Execution of arbitrary code)

Ossi Herrala and Jukka Taimisto of Codenomicon reported three     vulnerabilities in libgnutls of GnuTLS:
'Client Hello' messages containing an invalid server name can lead to a     buffer overflow when evaluating 'Security Parameters' (CVE-2008-1948).
Multiple 'Client Hello' messages can lead to a NULL pointer dereference     (CVE-2008-1949).
A TLS handshake including an encrypted 'Client Hello' message and an     invalid record length could lead to a buffer overread (CVE-2008-1950).

Impact :

Unauthenticated remote attackers could exploit these vulnerabilities to     cause Denial of Service conditions in daemons using GnuTLS. The first     vulnerability (CVE-2008-1948) might allow for the execution of     arbitrary code with the privileges of the daemon handling incoming TLS     connections.

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 200805-20.
#
# 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(32418);
  script_version("$Revision: 1.12 $");
  script_cvs_date("$Date: 2016/11/11 20:08:43 $");

  script_cve_id("CVE-2008-1948", "CVE-2008-1949", "CVE-2008-1950");
  script_osvdb_id(45382, 45383, 45384);
  script_xref(name:"GLSA", value:"200805-20");

  script_name(english:"GLSA-200805-20 : GnuTLS: 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-200805-20
(GnuTLS: Execution of arbitrary code)

    Ossi Herrala and Jukka Taimisto of Codenomicon reported three
    vulnerabilities in libgnutls of GnuTLS:
    'Client Hello' messages containing an invalid server name can lead to a
    buffer overflow when evaluating 'Security Parameters' (CVE-2008-1948).
    Multiple 'Client Hello' messages can lead to a NULL pointer dereference
    (CVE-2008-1949).
    A TLS handshake including an encrypted 'Client Hello' message and an
    invalid record length could lead to a buffer overread (CVE-2008-1950).
  
Impact :

    Unauthenticated remote attackers could exploit these vulnerabilities to
    cause Denial of Service conditions in daemons using GnuTLS. The first
    vulnerability (CVE-2008-1948) might allow for the execution of
    arbitrary code with the privileges of the daemon handling incoming TLS
    connections.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200805-20"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All GnuTLS users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-libs/gnutls-2.2.5'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(189, 287);

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

  script_set_attribute(attribute:"patch_publication_date", value:"2008/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/05/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2016 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:"net-libs/gnutls", unaffected:make_list("ge 2.2.5"), vulnerable:make_list("lt 2.2.5"))) 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, "GnuTLS");
}