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nessusThis script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2013-1620.NASL
HistoryNov 21, 2013 - 12:00 a.m.

RHEL 6 : xorg-x11-server (RHSA-2013:1620)

2013-11-2100:00:00
This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
13

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

25.0%

Updated xorg-x11-server packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

X.Org is an open source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

A flaw was found in the way the X.org X11 server registered new hot plugged devices. If a local user switched to a different session and plugged in a new device, input from that device could become available in the previous session, possibly leading to information disclosure.
(CVE-2013-1940)

This issue was found by David Airlie and Peter Hutterer of Red Hat.

This update also fixes the following bugs :

  • A previous upstream patch modified the Xephyr X server to be resizeable, however, it did not enable the resize functionality by default. As a consequence, X sandboxes were not resizeable on Red Hat Enterprise Linux 6.4 and later. This update enables the resize functionality by default so that X sandboxes can now be resized as expected. (BZ#915202)

  • In Red Hat Enterprise Linux 6, the X Security extension (XC-SECURITY) has been disabled and replaced by X Access Control Extension (XACE). However, XACE does not yet include functionality that was previously available in XC-SECURITY. With this update, XC-SECURITY is enabled in the xorg-x11-server spec file on Red Hat Enterprise Linux 6. (BZ#957298)

  • Upstream code changes to extension initialization accidentally disabled the GLX extension in Xvfb (the X virtual frame buffer), rendering headless 3D applications not functional. An upstream patch to this problem has been backported so the GLX extension is enabled again, and applications relying on this extension work as expected.
    (BZ#969538)

All xorg-x11-server users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

#%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-2013:1620. The text 
# itself is copyright (C) Red Hat, Inc.
#

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

if (description)
{
  script_id(71011);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2013-1940");
  script_bugtraq_id(59282);
  script_xref(name:"RHSA", value:"2013:1620");

  script_name(english:"RHEL 6 : xorg-x11-server (RHSA-2013:1620)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated xorg-x11-server packages that fix one security issue and
several bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

X.Org is an open source implementation of the X Window System. It
provides the basic low-level functionality that full-fledged graphical
user interfaces are designed upon.

A flaw was found in the way the X.org X11 server registered new hot
plugged devices. If a local user switched to a different session and
plugged in a new device, input from that device could become available
in the previous session, possibly leading to information disclosure.
(CVE-2013-1940)

This issue was found by David Airlie and Peter Hutterer of Red Hat.

This update also fixes the following bugs :

* A previous upstream patch modified the Xephyr X server to be
resizeable, however, it did not enable the resize functionality by
default. As a consequence, X sandboxes were not resizeable on Red Hat
Enterprise Linux 6.4 and later. This update enables the resize
functionality by default so that X sandboxes can now be resized as
expected. (BZ#915202)

* In Red Hat Enterprise Linux 6, the X Security extension
(XC-SECURITY) has been disabled and replaced by X Access Control
Extension (XACE). However, XACE does not yet include functionality
that was previously available in XC-SECURITY. With this update,
XC-SECURITY is enabled in the xorg-x11-server spec file on Red Hat
Enterprise Linux 6. (BZ#957298)

* Upstream code changes to extension initialization accidentally
disabled the GLX extension in Xvfb (the X virtual frame buffer),
rendering headless 3D applications not functional. An upstream patch
to this problem has been backported so the GLX extension is enabled
again, and applications relying on this extension work as expected.
(BZ#969538)

All xorg-x11-server users are advised to upgrade to these updated
packages, which contain backported patches to correct these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2013:1620"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2013-1940"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  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:redhat:enterprise_linux:xorg-x11-server-Xdmx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-Xephyr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-Xnest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-Xorg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-Xvfb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-source");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/05/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/11/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2013:1620";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-Xdmx-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-Xdmx-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-Xdmx-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-Xephyr-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-Xephyr-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-Xephyr-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-Xnest-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-Xnest-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-Xnest-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-Xorg-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-Xorg-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-Xvfb-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-Xvfb-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-Xvfb-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-common-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-common-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-common-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-debuginfo-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"xorg-x11-server-debuginfo-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-debuginfo-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"xorg-x11-server-devel-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"xorg-x11-server-devel-1.13.0-23.el6")) flag++;
  if (rpm_check(release:"RHEL6", reference:"xorg-x11-server-source-1.13.0-23.el6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc");
  }
}
VendorProductVersionCPE
redhatenterprise_linuxxorg-x11-server-debuginfop-cpe:/a:redhat:enterprise_linux:xorg-x11-server-debuginfo
redhatenterprise_linuxxorg-x11-server-develp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-devel
redhatenterprise_linuxxorg-x11-server-sourcep-cpe:/a:redhat:enterprise_linux:xorg-x11-server-source
redhatenterprise_linuxxorg-x11-server-xdmxp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xdmx
redhatenterprise_linuxxorg-x11-server-xephyrp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xephyr
redhatenterprise_linuxxorg-x11-server-xnestp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xnest
redhatenterprise_linuxxorg-x11-server-xorgp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xorg
redhatenterprise_linuxxorg-x11-server-xvfbp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xvfb
redhatenterprise_linuxxorg-x11-server-commonp-cpe:/a:redhat:enterprise_linux:xorg-x11-server-common
redhatenterprise_linux6cpe:/o:redhat:enterprise_linux:6

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

25.0%