CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
Percentile
88.3%
The remote host is affected by the vulnerability described in GLSA-200806-07 (X.Org X server: Multiple vulnerabilities)
Regenrecht reported multiple vulnerabilities in various X server extensions via iDefense:
The SProcSecurityGenerateAuthorization() and SProcRecordCreateContext() functions of the RECORD and Security extensions are lacking proper parameter validation (CVE-2008-1377).
An integer overflow is possible in the function ShmPutImage() of the MIT-SHM extension (CVE-2008-1379).
The RENDER extension contains several possible integer overflows in the AllocateGlyph() function (CVE-2008-2360) which could possibly lead to a heap-based buffer overflow. Further possible integer overflows have been found in the ProcRenderCreateCursor() function (CVE-2008-2361) as well as in the SProcRenderCreateLinearGradient(), SProcRenderCreateRadialGradient() and SProcRenderCreateConicalGradient() functions (CVE-2008-2362).
Impact :
Exploitation of these vulnerabilities could possibly lead to the remote execution of arbitrary code with root privileges, if the server is running as root, which is the default. It is also possible to crash the server by making use of these vulnerabilities.
Workaround :
It is possible to avoid these vulnerabilities by disabling the affected server extensions. Therefore edit the configuration file (/etc/X11/xorg.conf) to contain the following in the appropriate places:
Section 'Extensions' Option 'MIT-SHM' 'disable' Option 'RENDER' 'disable' Option 'SECURITY' 'disable' EndSection Section 'Module' Disable 'record' EndSection
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200806-07.
#
# The advisory text is Copyright (C) 2001-2017 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(33243);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2008-1377", "CVE-2008-1379", "CVE-2008-2360", "CVE-2008-2361", "CVE-2008-2362");
script_xref(name:"GLSA", value:"200806-07");
script_name(english:"GLSA-200806-07 : X.Org X 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-200806-07
(X.Org X server: Multiple vulnerabilities)
Regenrecht reported multiple vulnerabilities in various X server
extensions via iDefense:
The
SProcSecurityGenerateAuthorization() and SProcRecordCreateContext()
functions of the RECORD and Security extensions are lacking proper
parameter validation (CVE-2008-1377).
An integer overflow is
possible in the function ShmPutImage() of the MIT-SHM extension
(CVE-2008-1379).
The RENDER extension contains several
possible integer overflows in the AllocateGlyph() function
(CVE-2008-2360) which could possibly lead to a heap-based buffer
overflow. Further possible integer overflows have been found in the
ProcRenderCreateCursor() function (CVE-2008-2361) as well as in the
SProcRenderCreateLinearGradient(), SProcRenderCreateRadialGradient()
and SProcRenderCreateConicalGradient() functions (CVE-2008-2362).
Impact :
Exploitation of these vulnerabilities could possibly lead to the remote
execution of arbitrary code with root privileges, if the server is
running as root, which is the default. It is also possible to crash the
server by making use of these vulnerabilities.
Workaround :
It is possible to avoid these vulnerabilities by disabling the affected
server extensions. Therefore edit the configuration file
(/etc/X11/xorg.conf) to contain the following in the appropriate
places:
Section 'Extensions'
Option 'MIT-SHM' 'disable'
Option 'RENDER' 'disable'
Option 'SECURITY' 'disable'
EndSection
Section 'Module'
Disable 'record'
EndSection"
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200806-07"
);
script_set_attribute(
attribute:"solution",
value:
"All X.org X Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.3.0.0-r6'"
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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_cwe_id(189);
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:"2008/06/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2008/06/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2008-2021 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 1.3.0.0-r6"), vulnerable:make_list("lt 1.3.0.0-r6"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "X.Org X server");
}