Vulnerabilities > CVE-2009-2730 - Cryptographic Issues vulnerability in GNU Gnutls

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2009:1232 and 
# Oracle Linux Security Advisory ELSA-2009-1232 respectively.
#

include("compat.inc");

if (description)
{
  script_id(67916);
  script_version("1.8");
  script_cvs_date("Date: 2019/10/25 13:36:08");

  script_cve_id("CVE-2009-2730");
  script_bugtraq_id(35952);
  script_xref(name:"RHSA", value:"2009:1232");

  script_name(english:"Oracle Linux 4 / 5 : gnutls (ELSA-2009-1232)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2009:1232 :

Updated gnutls packages that fix a security issue are now available
for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

The GnuTLS library provides support for cryptographic algorithms and
for protocols such as Transport Layer Security (TLS).

A flaw was discovered in the way GnuTLS handles NULL characters in
certain fields of X.509 certificates. If an attacker is able to get a
carefully-crafted certificate signed by a Certificate Authority
trusted by an application using GnuTLS, the attacker could use the
certificate during a man-in-the-middle attack and potentially confuse
the application into accepting it by mistake. (CVE-2009-2730)

Users of GnuTLS are advised to upgrade to these updated packages,
which contain a backported patch that corrects this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2009-August/001131.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2009-August/001132.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected gnutls packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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_cwe_id(310);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:gnutls-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:gnutls-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/08/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^(4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 4 / 5", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL4", reference:"gnutls-1.0.20-4.0.1.el4_8.3")) flag++;
if (rpm_check(release:"EL4", reference:"gnutls-devel-1.0.20-4.0.1.el4_8.3")) flag++;

if (rpm_check(release:"EL5", reference:"gnutls-1.4.1-3.el5_3.5")) flag++;
if (rpm_check(release:"EL5", reference:"gnutls-devel-1.4.1-3.el5_3.5")) flag++;
if (rpm_check(release:"EL5", reference:"gnutls-utils-1.4.1-3.el5_3.5")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnutls / gnutls-devel / gnutls-utils");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2009-8622.
#

include("compat.inc");

if (description)
{
  script_id(41629);
  script_version ("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:30");

  script_cve_id("CVE-2009-2730");
  script_bugtraq_id(35952);
  script_xref(name:"FEDORA", value:"2009-8622");

  script_name(english:"Fedora 10 : gnutls-2.4.2-5.fc10 (2009-8622)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update fixes handling of NUL characters in certificate Common
Name or subjectAltName fields especially in regards to comparsion to
hostnames.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=516231"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2009-September/029477.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1529beaf"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected gnutls package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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_cwe_id(310);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:gnutls");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:10");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/09/28");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^10([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 10.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC10", reference:"gnutls-2.4.2-5.fc10")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnutls");
}

• name	Aharon Chernin
  organization	SCAP.com, LLC

• name	Dragos Prisaca
  organization	G2, Inc.

• comment	The operating system installed on the system is Red Hat Enterprise Linux 4
  oval	oval:org.mitre.oval:def:11831

• comment	CentOS Linux 4.x
  oval	oval:org.mitre.oval:def:16636

• comment	Oracle Linux 4.x
  oval	oval:org.mitre.oval:def:15990

• comment	The operating system installed on the system is Red Hat Enterprise Linux 5
  oval	oval:org.mitre.oval:def:11414

• comment	The operating system installed on the system is CentOS Linux 5.x
  oval	oval:org.mitre.oval:def:15802

• comment	Oracle Linux 5.x
  oval	oval:org.mitre.oval:def:15459

• name	Pai Peng
  organization	Hewlett-Packard

• name	Chris Coffin
  organization	The MITRE Corporation