The remote host is affected by the vulnerability described in GLSA-200801-09 (X.Org X server and Xfont library: Multiple vulnerabilities)
regenrecht reported multiple vulnerabilities in various X server extension via iDefense:
The XFree86-Misc extension does not properly sanitize a parameter within a PassMessage request, allowing the modification of a function pointer (CVE-2007-5760).
Multiple functions in the XInput extension do not properly sanitize client requests for swapping bytes, leading to corruption of heap memory (CVE-2007-6427).
Integer overflow vulnerabilities in the EVI extension and in the MIT-SHM extension can lead to buffer overflows (CVE-2007-6429).
The TOG-CUP extension does not sanitize an index value in the ProcGetReservedColormapEntries() function, leading to arbitrary memory access (CVE-2007-6428).
A buffer overflow was discovered in the Xfont library when processing PCF font files (CVE-2008-0006).
The X server does not enforce restrictions when a user specifies a security policy file and attempts to open it (CVE-2007-5958).
Impact :
Remote attackers could exploit the vulnerability in the Xfont library by enticing a user to load a specially crafted PCF font file resulting in the execution of arbitrary code with the privileges of the user running the X server, typically root. Local attackers could exploit this and the vulnerabilities in the X.org extensions to gain elevated privileges. If the X server allows connections from the network, these vulnerabilities could be exploited remotely. A local attacker could determine the existence of arbitrary files by exploiting the last vulnerability or possibly cause a Denial of Service.
Workaround :
Workarounds for some of the vulnerabilities can be found in the X.Org security advisory as listed under References.
#%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 200801-09.
#
# 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('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(30033);
script_version("1.19");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2007-5760", "CVE-2007-5958", "CVE-2007-6427", "CVE-2007-6428", "CVE-2007-6429", "CVE-2008-0006");
script_bugtraq_id(27350);
script_xref(name:"GLSA", value:"200801-09");
script_name(english:"GLSA-200801-09 : X.Org X server and Xfont library: 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-200801-09
(X.Org X server and Xfont library: Multiple vulnerabilities)
regenrecht reported multiple vulnerabilities in various X server
extension via iDefense:
The XFree86-Misc extension does not properly sanitize a parameter
within a PassMessage request, allowing the modification of a function
pointer (CVE-2007-5760).
Multiple functions in the XInput extension do not properly sanitize
client requests for swapping bytes, leading to corruption of heap
memory (CVE-2007-6427).
Integer overflow vulnerabilities in the EVI extension and in the
MIT-SHM extension can lead to buffer overflows (CVE-2007-6429).
The TOG-CUP extension does not sanitize an index value in the
ProcGetReservedColormapEntries() function, leading to arbitrary memory
access (CVE-2007-6428).
A buffer overflow was discovered in the Xfont library when
processing PCF font files (CVE-2008-0006).
The X server does not enforce restrictions when a user specifies a
security policy file and attempts to open it (CVE-2007-5958).
Impact :
Remote attackers could exploit the vulnerability in the Xfont library
by enticing a user to load a specially crafted PCF font file resulting
in the execution of arbitrary code with the privileges of the user
running the X server, typically root. Local attackers could exploit
this and the vulnerabilities in the X.org extensions to gain elevated
privileges. If the X server allows connections from the network, these
vulnerabilities could be exploited remotely. A local attacker could
determine the existence of arbitrary files by exploiting the last
vulnerability or possibly cause a Denial of Service.
Workaround :
Workarounds for some of the vulnerabilities can be found in the X.Org
security advisory as listed under References."
);
# http://lists.freedesktop.org/archives/xorg/2008-January/031918.html
script_set_attribute(
attribute:"see_also",
value:"https://lists.freedesktop.org/archives/xorg/2008-January/031918.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200801-09"
);
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-r5'
All X.Org Xfont library users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-libs/libXfont-1.3.1-r1'"
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_cwe_id(119, 189, 200, 362, 399);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:libXfont");
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:"2008/01/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2008/01/21");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2008-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
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-r5"), vulnerable:make_list("lt 1.3.0.0-r5"))) flag++;
if (qpkg_check(package:"x11-libs/libXfont", unaffected:make_list("ge 1.3.1-r1"), vulnerable:make_list("lt 1.3.1-r1"))) 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 and Xfont library");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5760
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5958
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6427
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6428
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6429
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0006
lists.freedesktop.org/archives/xorg/2008-January/031918.html
security.gentoo.org/glsa/200801-09