Vulnerabilities > CVE-2017-2624 - Information Exposure vulnerability in multiple products

047910
CVSS 1.9 - LOW
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
local
x-org
debian
CWE-200
nessus
NVD
Published: 2018-07-27
Updated: 2019-10-09

Summary

It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.

Vulnerable Configurations

Part Description Count
Application
X.Org
160
OS
Debian
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2683.NASL
    descriptionAccording to the versions of the xorg-x11-server packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.(CVE-2018-14665) - In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events.(CVE-2017-10971) - In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.(CVE-2017-13721) - It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.(CVE-2017-2624) - Uninitialized data in endianness conversion in the XEvent handling of the X.Org X Server before 2017-06-19 allowed authenticated malicious users to access potentially privileged data from the X server.(CVE-2017-10972) - xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12178) - xorg-x11-server before 1.19.5 was missing extra length validation in ProcEstablishConnection function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12176) - xorg-x11-server before 1.19.5 was missing length validation in MIT-SCREEN-SAVER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12185) - xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12187) - xorg-x11-server before 1.19.5 was missing length validation in XFIXES extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12183) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 DGA extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12181) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 DRI extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12182) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 VidModeExtension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12180) - xorg-x11-server before 1.19.5 was missing length validation in XINERAMA extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12184) - xorg-x11-server before 1.19.5 was missing length validation in X-Resource extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12186) - xorg-x11-server before 1.19.5 was vulnerable to integer overflow in (S)ProcXIBarrierReleasePointer functions allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12179) - xorg-x11-server before 1.19.5 was vulnerable to integer overflow in ProcDbeGetVisualInfo function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12177) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-08
    modified2019-12-18
    plugin id132218
    published2019-12-18
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132218
    titleEulerOS 2.0 SP3 : xorg-x11-server (EulerOS-SA-2019-2683)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(132218);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id(
    "CVE-2017-10971",
    "CVE-2017-10972",
    "CVE-2017-12176",
    "CVE-2017-12177",
    "CVE-2017-12178",
    "CVE-2017-12179",
    "CVE-2017-12180",
    "CVE-2017-12181",
    "CVE-2017-12182",
    "CVE-2017-12183",
    "CVE-2017-12184",
    "CVE-2017-12185",
    "CVE-2017-12186",
    "CVE-2017-12187",
    "CVE-2017-13721",
    "CVE-2017-2624",
    "CVE-2018-14665"
  );

  script_name(english:"EulerOS 2.0 SP3 : xorg-x11-server (EulerOS-SA-2019-2683)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the xorg-x11-server packages installed,
the EulerOS installation on the remote host is affected by the
following vulnerabilities :

  - A flaw was found in xorg-x11-server before 1.20.3. An
    incorrect permission check for -modulepath and -logfile
    options when starting Xorg. X server allows
    unprivileged users with the ability to log in to the
    system via physical console to escalate their
    privileges and run arbitrary code under root
    privileges.(CVE-2018-14665)

  - In the X.Org X server before 2017-06-19, a user
    authenticated to an X Session could crash or execute
    code in the context of the X Server by exploiting a
    stack overflow in the endianness conversion of X
    Events.(CVE-2017-10971)

  - In X.Org Server (aka xserver and xorg-server) before
    1.19.4, an attacker authenticated to an X server with
    the X shared memory extension enabled can cause aborts
    of the X server or replace shared memory segments of
    other X clients in the same session.(CVE-2017-13721)

  - It was found that xorg-x11-server before 1.19.0
    including uses memcmp() to check the received MIT
    cookie against a series of valid cookies. If the cookie
    is correct, it is allowed to attach to the Xorg
    session. Since most memcmp() implementations return
    after an invalid byte is seen, this causes a time
    difference between a valid and invalid byte, which
    could allow an efficient brute force
    attack.(CVE-2017-2624)

  - Uninitialized data in endianness conversion in the
    XEvent handling of the X.Org X Server before 2017-06-19
    allowed authenticated malicious users to access
    potentially privileged data from the X
    server.(CVE-2017-10972)

  - xorg-x11-server before 1.19.5 had wrong extra length
    check in ProcXIChangeHierarchy function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12178)

  - xorg-x11-server before 1.19.5 was missing extra length
    validation in ProcEstablishConnection function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12176)

  - xorg-x11-server before 1.19.5 was missing length
    validation in MIT-SCREEN-SAVER extension allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12185)

  - xorg-x11-server before 1.19.5 was missing length
    validation in RENDER extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12187)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFIXES extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12183)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 DGA extension allowing malicious
    X client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12181)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 DRI extension allowing malicious
    X client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12182)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 VidModeExtension allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12180)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XINERAMA extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12184)

  - xorg-x11-server before 1.19.5 was missing length
    validation in X-Resource extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12186)

  - xorg-x11-server before 1.19.5 was vulnerable to integer
    overflow in (S)ProcXIBarrierReleasePointer functions
    allowing malicious X client to cause X server to crash
    or possibly execute arbitrary code.(CVE-2017-12179)

  - xorg-x11-server before 1.19.5 was vulnerable to integer
    overflow in ProcDbeGetVisualInfo function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12177)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2683
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?46718661");
  script_set_attribute(attribute:"solution", value:
"Update the affected xorg-x11-server 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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Xorg X11 Server SUID modulepath Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-Xephyr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-Xorg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["xorg-x11-server-Xephyr-1.17.2-10.h6",
        "xorg-x11-server-Xorg-1.17.2-10.h6",
        "xorg-x11-server-common-1.17.2-10.h6"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) 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, "xorg-x11-server");
}
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201710-30.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201710-30 (X.Org Server: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in X.Org Server. Please review the referenced CVE identifiers for details. Impact : A local attacker could cause a global buffer overflow or a Denial of Service condition. Workaround : There is no known workaround at this time
    last seen2020-06-01
    modified2020-06-02
    plugin id104231
    published2017-10-30
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/104231
    titleGLSA-201710-30 : X.Org Server: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201710-30.
#
# The advisory text is Copyright (C) 2001-2018 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(104231);
  script_version("$Revision: 3.2 $");
  script_cvs_date("$Date: 2018/01/26 17:15:58 $");

  script_cve_id("CVE-2013-6424", "CVE-2017-13721", "CVE-2017-13723", "CVE-2017-2624");
  script_xref(name:"GLSA", value:"201710-30");

  script_name(english:"GLSA-201710-30 : X.Org Server: Multiple vulnerabilities");
  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-201710-30
(X.Org Server: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in X.Org Server. Please
      review the referenced CVE identifiers for details.
  
Impact :

    A local attacker could cause a global buffer overflow or a Denial of
      Service condition.
  
Workaround :

    There is no known workaround at this time"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201710-30"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All X.Org Server users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.19.4'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2017/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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:"x11-base/xorg-server", unaffected:make_list("ge 1.19.4"), vulnerable:make_list("lt 1.19.4"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "X.Org Server");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-710.NASL
    descriptionThis update for xorg-x11-server fixes the following security issues : - CVE-2017-2624: Prevent timing attack against MIT cookie. (boo#1025029) - Use arc4random to generate cookies with more randomness. (boo#1025084) - Remove unused function with use-after-free issue. (boo#1025035)
    last seen2020-06-05
    modified2017-06-20
    plugin id100883
    published2017-06-20
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100883
    titleopenSUSE Security Update : xorg-x11-server (openSUSE-2017-710)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2017-710.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(100883);
  script_version("3.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2017-2624");

  script_name(english:"openSUSE Security Update : xorg-x11-server (openSUSE-2017-710)");
  script_summary(english:"Check for the openSUSE-2017-710 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xorg-x11-server fixes the following security issues :

  - CVE-2017-2624: Prevent timing attack against MIT cookie.
    (boo#1025029)

  - Use arc4random to generate cookies with more randomness.
    (boo#1025084)

  - Remove unused function with use-after-free issue.
    (boo#1025035)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1025029"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1025035"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1025084"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected xorg-x11-server packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-extra-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-sdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xorg-x11-server-source");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE42\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-debuginfo-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-debugsource-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-extra-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-extra-debuginfo-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-sdk-7.6_1.18.3-12.15.2") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xorg-x11-server-source-7.6_1.18.3-12.15.2") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xorg-x11-server / xorg-x11-server-debuginfo / etc");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3362-1.NASL
    descriptionIt was discovered that the X.Org X server incorrectly handled endianness conversion of certain X events. An attacker able to connect to an X server, either locally or remotely, could use this issue to crash the server, or possibly execute arbitrary code as an administrator. (CVE-2017-10971) It was discovered that the X.Org X server incorrectly handled endianness conversion of certain X events. An attacker able to connect to an X server, either locally or remotely, could use this issue to possibly obtain sensitive information. (CVE-2017-10972) Eric Sesterhenn discovered that the X.Org X server incorrectly compared MIT cookies. An attacker could possibly use this issue to perform a timing attack and recover the MIT cookie. (CVE-2017-2624). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id101949
    published2017-07-25
    reporterUbuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/101949
    titleUbuntu 14.04 LTS / 16.04 LTS / 17.04 : xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities (USN-3362-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3362-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(101949);
  script_version("3.9");
  script_cvs_date("Date: 2019/09/18 12:31:47");

  script_cve_id("CVE-2017-10971", "CVE-2017-10972", "CVE-2017-2624");
  script_xref(name:"USN", value:"3362-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities (USN-3362-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that the X.Org X server incorrectly handled
endianness conversion of certain X events. An attacker able to connect
to an X server, either locally or remotely, could use this issue to
crash the server, or possibly execute arbitrary code as an
administrator. (CVE-2017-10971)

It was discovered that the X.Org X server incorrectly handled
endianness conversion of certain X events. An attacker able to connect
to an X server, either locally or remotely, could use this issue to
possibly obtain sensitive information. (CVE-2017-10972)

Eric Sesterhenn discovered that the X.Org X server incorrectly
compared MIT cookies. An attacker could possibly use this issue to
perform a timing attack and recover the MIT cookie. (CVE-2017-2624).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/3362-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected xserver-xorg-core, xserver-xorg-core-hwe-16.04 and
/ or xserver-xorg-core-lts-xenial packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:canonical:ubuntu_linux:xserver-xorg-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-hwe-16.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-lts-xenial");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/07/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(14\.04|16\.04|17\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 17.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"14.04", pkgname:"xserver-xorg-core", pkgver:"2:1.15.1-0ubuntu2.9")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"xserver-xorg-core-lts-xenial", pkgver:"2:1.18.3-1ubuntu2.3~trusty2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"xserver-xorg-core", pkgver:"2:1.18.4-0ubuntu0.3")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"xserver-xorg-core-hwe-16.04", pkgver:"2:1.18.4-1ubuntu6.1~16.04.2")) flag++;
if (ubuntu_check(osver:"17.04", pkgname:"xserver-xorg-core", pkgver:"2:1.19.3-1ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xserver-xorg-core / xserver-xorg-core-hwe-16.04 / etc");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1675-1.NASL
    descriptionThis update for xorg-x11-server provides the following fixes : - Remove unused function with use-after-free issue. (bsc#1025035) - Use arc4random to generate cookies. (bsc#1025084) - Prevent timing attack against MIT cookie. (bsc#1025029, CVE-2017-2624) - XDrawArc performance improvement. (bsc#1019649) - Re-enable indirect GLX by default. (bsc#1039042) - Add IndirectGLX ServerFlags option which allows users to enable or disable indirect GLX. (bsc#1032509) - Fix dashing in GLAMOR. (bsc#1021803) - Fix X server crash on drawing dashed lines. (bsc#1025985) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id101059
    published2017-06-27
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/101059
    titleSUSE SLED12 / SLES12 Security Update : xorg-x11-server (SUSE-SU-2017:1675-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:1675-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(101059);
  script_version("3.7");
  script_cvs_date("Date: 2019/09/11 11:22:15");

  script_cve_id("CVE-2017-2624");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : xorg-x11-server (SUSE-SU-2017:1675-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xorg-x11-server provides the following fixes :

  - Remove unused function with use-after-free issue.
    (bsc#1025035)

  - Use arc4random to generate cookies. (bsc#1025084)

  - Prevent timing attack against MIT cookie. (bsc#1025029,
    CVE-2017-2624)

  - XDrawArc performance improvement. (bsc#1019649)

  - Re-enable indirect GLX by default. (bsc#1039042)

  - Add IndirectGLX ServerFlags option which allows users to
    enable or disable indirect GLX. (bsc#1032509)

  - Fix dashing in GLAMOR. (bsc#1021803)

  - Fix X server crash on drawing dashed lines.
    (bsc#1025985)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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.suse.com/show_bug.cgi?id=1019649"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1021803"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1025029"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1025035"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1025084"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1025985"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1032509"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039042"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-2624/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171675-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c673d665"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t
patch SUSE-SLE-SDK-12-SP2-2017-1037=1

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2017-1037=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-1037=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-1037=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:novell:suse_linux:xorg-x11-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-server-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-server-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-server-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-server-extra-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-debuginfo-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-debugsource-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-extra-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-extra-debuginfo-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-debuginfo-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-debugsource-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-extra-7.6_1.18.3-71.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xorg-x11-server-extra-debuginfo-7.6_1.18.3-71.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xorg-x11-server");
}
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2421.NASL
    descriptionAccording to the versions of the xorg-x11-server packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - xorg-x11-server before 1.19.5 was vulnerable to integer overflow in ProcDbeGetVisualInfo function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12177) - xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12178) - xorg-x11-server before 1.19.5 was vulnerable to integer overflow in (S)ProcXIBarrierReleasePointer functions allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12179) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 VidModeExtension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12180) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 DGA extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12181) - xorg-x11-server before 1.19.5 was missing length validation in XFree86 DRI extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12182) - xorg-x11-server before 1.19.5 was missing length validation in XFIXES extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12183) - xorg-x11-server before 1.19.5 was missing length validation in XINERAMA extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12184) - xorg-x11-server before 1.19.5 was missing length validation in MIT-SCREEN-SAVER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12185) - xorg-x11-server before 1.19.5 was missing length validation in X-Resource extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12186) - xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12187) - In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.(CVE-2017-13721) - It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.(CVE-2017-2624) - A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.(CVE-2018-14665) - In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events.(CVE-2017-10971) - Uninitialized data in endianness conversion in the XEvent handling of the X.Org X Server before 2017-06-19 allowed authenticated malicious users to access potentially privileged data from the X server.(CVE-2017-10972) - xorg-x11-server before 1.19.5 was missing extra length validation in ProcEstablishConnection function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.(CVE-2017-12176) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-08
    modified2019-12-10
    plugin id131913
    published2019-12-10
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131913
    titleEulerOS 2.0 SP2 : xorg-x11-server (EulerOS-SA-2019-2421)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131913);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id(
    "CVE-2017-10971",
    "CVE-2017-10972",
    "CVE-2017-12176",
    "CVE-2017-12177",
    "CVE-2017-12178",
    "CVE-2017-12179",
    "CVE-2017-12180",
    "CVE-2017-12181",
    "CVE-2017-12182",
    "CVE-2017-12183",
    "CVE-2017-12184",
    "CVE-2017-12185",
    "CVE-2017-12186",
    "CVE-2017-12187",
    "CVE-2017-13721",
    "CVE-2017-2624",
    "CVE-2018-14665"
  );

  script_name(english:"EulerOS 2.0 SP2 : xorg-x11-server (EulerOS-SA-2019-2421)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the xorg-x11-server packages installed,
the EulerOS installation on the remote host is affected by the
following vulnerabilities :

  - xorg-x11-server before 1.19.5 was vulnerable to integer
    overflow in ProcDbeGetVisualInfo function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12177)

  - xorg-x11-server before 1.19.5 had wrong extra length
    check in ProcXIChangeHierarchy function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12178)

  - xorg-x11-server before 1.19.5 was vulnerable to integer
    overflow in (S)ProcXIBarrierReleasePointer functions
    allowing malicious X client to cause X server to crash
    or possibly execute arbitrary code.(CVE-2017-12179)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 VidModeExtension allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12180)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 DGA extension allowing malicious
    X client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12181)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFree86 DRI extension allowing malicious
    X client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12182)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XFIXES extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12183)

  - xorg-x11-server before 1.19.5 was missing length
    validation in XINERAMA extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12184)

  - xorg-x11-server before 1.19.5 was missing length
    validation in MIT-SCREEN-SAVER extension allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12185)

  - xorg-x11-server before 1.19.5 was missing length
    validation in X-Resource extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12186)

  - xorg-x11-server before 1.19.5 was missing length
    validation in RENDER extension allowing malicious X
    client to cause X server to crash or possibly execute
    arbitrary code.(CVE-2017-12187)

  - In X.Org Server (aka xserver and xorg-server) before
    1.19.4, an attacker authenticated to an X server with
    the X shared memory extension enabled can cause aborts
    of the X server or replace shared memory segments of
    other X clients in the same session.(CVE-2017-13721)

  - It was found that xorg-x11-server before 1.19.0
    including uses memcmp() to check the received MIT
    cookie against a series of valid cookies. If the cookie
    is correct, it is allowed to attach to the Xorg
    session. Since most memcmp() implementations return
    after an invalid byte is seen, this causes a time
    difference between a valid and invalid byte, which
    could allow an efficient brute force
    attack.(CVE-2017-2624)

  - A flaw was found in xorg-x11-server before 1.20.3. An
    incorrect permission check for -modulepath and -logfile
    options when starting Xorg. X server allows
    unprivileged users with the ability to log in to the
    system via physical console to escalate their
    privileges and run arbitrary code under root
    privileges.(CVE-2018-14665)

  - In the X.Org X server before 2017-06-19, a user
    authenticated to an X Session could crash or execute
    code in the context of the X Server by exploiting a
    stack overflow in the endianness conversion of X
    Events.(CVE-2017-10971)

  - Uninitialized data in endianness conversion in the
    XEvent handling of the X.Org X Server before 2017-06-19
    allowed authenticated malicious users to access
    potentially privileged data from the X
    server.(CVE-2017-10972)

  - xorg-x11-server before 1.19.5 was missing extra length
    validation in ProcEstablishConnection function allowing
    malicious X client to cause X server to crash or
    possibly execute arbitrary code.(CVE-2017-12176)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2421
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?611daaca");
  script_set_attribute(attribute:"solution", value:
"Update the affected xorg-x11-server 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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Xorg X11 Server SUID modulepath Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-Xephyr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-Xorg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["xorg-x11-server-Xephyr-1.17.2-10.h3",
        "xorg-x11-server-Xorg-1.17.2-10.h3",
        "xorg-x11-server-common-1.17.2-10.h3"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) 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, "xorg-x11-server");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1186.NASL
    descriptionSeveral vulnerabilities have been discovered in the X.Org X server. An attacker who
    last seen2020-03-17
    modified2017-11-27
    plugin id104745
    published2017-11-27
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104745
    titleDebian DLA-1186-1 : xorg-server security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1741-1.NASL
    descriptionThis update for xorg-x11-server fixes the following issues: Security issues : - CVE-2017-2624: Prevent timing attack against MIT cookie. (bsc#1025029, CVE-2017-2624) Non security issues : - Use arc4random to generate cookies. (bsc#1025084) - XDrawArc performance improvement (bsc#1019649) - Fix byte swapping for gradeint stops (bsc#981044). - Remove unused function with use-after-free issue. (bsc#1025035) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id101201
    published2017-07-03
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/101201
    titleSUSE SLES11 Security Update : xorg-x11-server (SUSE-SU-2017:1741-1)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201704-03.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201704-03 (X.Org: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in X.Org server and libraries. Please review the CVE identifiers referenced below for details. Impact : A local or remote users can utilize the vulnerabilities to attach to the X.Org session as a user and execute arbitrary code. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id99276
    published2017-04-11
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/99276
    titleGLSA-201704-03 : X.Org: Multiple vulnerabilities

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/141367/X41-2017-001.txt
idPACKETSTORM:141367
last seen2017-03-02
published2017-03-01
reporterEric Sesterhenn
sourcehttps://packetstormsecurity.com/files/141367/X.org-Privilege-Escalation-Use-After-Free-Weak-Entropy.html
titleX.org Privilege Escalation / Use-After-Free / Weak Entropy

References