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nessusThis script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.CENTOS_RHSA-2009-1232.NASL
HistoryAug 27, 2009 - 12:00 a.m.

CentOS 4 / 5 : gnutls (CESA-2009:1232)

2009-08-2700:00:00
This script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
12

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.

#%NASL_MIN_LEVEL 70300
#
# (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 
# CentOS Errata and Security Advisory 2009:1232 respectively.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(40779);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

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

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

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"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."
  );
  # https://lists.centos.org/pipermail/centos-announce/2009-August/016111.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?897036af"
  );
  # https://lists.centos.org/pipermail/centos-announce/2009-August/016112.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?33e7a995"
  );
  # https://lists.centos.org/pipermail/centos-announce/2009-August/016115.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?04b00768"
  );
  # https://lists.centos.org/pipermail/centos-announce/2009-August/016116.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4e54384f"
  );
  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:centos:centos:gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gnutls-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gnutls-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos: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:"2009/08/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^(4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 4.x / 5.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-4", cpu:"i386", reference:"gnutls-1.0.20-4.el4_8.3")) flag++;
if (rpm_check(release:"CentOS-4", cpu:"x86_64", reference:"gnutls-1.0.20-4.el4_8.3")) flag++;
if (rpm_check(release:"CentOS-4", cpu:"i386", reference:"gnutls-devel-1.0.20-4.el4_8.3")) flag++;
if (rpm_check(release:"CentOS-4", cpu:"x86_64", reference:"gnutls-devel-1.0.20-4.el4_8.3")) flag++;

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


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  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");
}
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