CentOS 5 / 6 : rpm (CESA-2014:1974)

2014-12-10T00:00:00
ID CENTOS_RHSA-2014-1974.NASL
Type nessus
Reporter Tenable
Modified 2018-11-10T00:00:00

Description

Updated rpm packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The RPM Package Manager (RPM) is a powerful command line driven package management system capable of installing, uninstalling, verifying, querying, and updating software packages. Each software package consists of an archive of files along with information about the package such as its version, description, and other information.

It was found that RPM wrote file contents to the target installation directory under a temporary name, and verified its cryptographic signature only after the temporary file has been written completely. Under certain conditions, the system interprets the unverified temporary file contents and extracts commands from it. This could allow an attacker to modify signed RPM files in such a way that they would execute code chosen by the attacker during package installation. (CVE-2013-6435)

This issue was discovered by Florian Weimer of Red Hat Product Security.

All rpm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. All running applications linked against the RPM library must be restarted for this update to take effect.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2014:1974 and 
# CentOS Errata and Security Advisory 2014:1974 respectively.
#

include("compat.inc");

if (description)
{
  script_id(79843);
  script_version("1.7");
  script_cvs_date("Date: 2018/11/10 11:49:31");

  script_cve_id("CVE-2013-6435");
  script_bugtraq_id(71558);
  script_xref(name:"RHSA", value:"2014:1974");

  script_name(english:"CentOS 5 / 6 : rpm (CESA-2014:1974)");
  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 rpm packages that fix one security issue are now available for
Red Hat Enterprise Linux 5 and 6.

Red Hat Product Security has rated this update as having Important
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.

The RPM Package Manager (RPM) is a powerful command line driven
package management system capable of installing, uninstalling,
verifying, querying, and updating software packages. Each software
package consists of an archive of files along with information about
the package such as its version, description, and other information.

It was found that RPM wrote file contents to the target installation
directory under a temporary name, and verified its cryptographic
signature only after the temporary file has been written completely.
Under certain conditions, the system interprets the unverified
temporary file contents and extracts commands from it. This could
allow an attacker to modify signed RPM files in such a way that they
would execute code chosen by the attacker during package installation.
(CVE-2013-6435)

This issue was discovered by Florian Weimer of Red Hat Product
Security.

All rpm users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. All running
applications linked against the RPM library must be restarted for this
update to take effect."
  );
  # https://lists.centos.org/pipermail/centos-announce/2014-December/020818.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2f2542f3"
  );
  # https://lists.centos.org/pipermail/centos-announce/2014-December/020819.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?eb07d648"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected rpm packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
  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:centos:centos:popt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-apidocs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-build");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-cron");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rpm-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/12/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/12/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 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);
if (!get_kb_item("Host/CentOS/release")) audit(AUDIT_OS_NOT, "CentOS");
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 && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-5", reference:"popt-1.10.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-4.4.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-apidocs-4.4.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-build-4.4.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-devel-4.4.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-libs-4.4.2.3-36.el5_11")) flag++;
if (rpm_check(release:"CentOS-5", reference:"rpm-python-4.4.2.3-36.el5_11")) flag++;

if (rpm_check(release:"CentOS-6", reference:"rpm-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-apidocs-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-build-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-cron-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-devel-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-libs-4.8.0-38.el6_6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"rpm-python-4.8.0-38.el6_6")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");