CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
EPSS
Percentile
90.9%
The remote host is affected by the vulnerability described in GLSA-200511-23 (chmlib, KchmViewer: Stack-based buffer overflow)
Sven Tantau reported about a buffer overflow vulnerability in chmlib. The function '_chm_decompress_block()' does not properly perform boundary checking, resulting in a stack-based buffer overflow.
Impact :
By convincing a user to open a specially crafted ITSS or CHM file, using KchmViewer or a program makes use of chmlib, a remote attacker could execute arbitrary code with the privileges of the user running the software.
Workaround :
There is no known workaround at this time.
#%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 200511-23.
#
# The advisory text is Copyright (C) 2001-2015 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(20267);
script_version("1.16");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2005-3318");
script_xref(name:"GLSA", value:"200511-23");
script_name(english:"GLSA-200511-23 : chmlib, KchmViewer: Stack-based buffer overflow");
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-200511-23
(chmlib, KchmViewer: Stack-based buffer overflow)
Sven Tantau reported about a buffer overflow vulnerability in
chmlib. The function '_chm_decompress_block()' does not properly
perform boundary checking, resulting in a stack-based buffer overflow.
Impact :
By convincing a user to open a specially crafted ITSS or CHM file,
using KchmViewer or a program makes use of chmlib, a remote attacker
could execute arbitrary code with the privileges of the user running
the software.
Workaround :
There is no known workaround at this time."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200511-23"
);
script_set_attribute(
attribute:"solution",
value:
"All chmlib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/chmlib-0.37.4'
All KchmViewer users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-text/kchmviewer-1.1'"
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:chmlib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:kchmviewer");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2005/11/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2005/12/07");
script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/12");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2005-2021 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:"app-text/kchmviewer", unaffected:make_list("ge 1.1"), vulnerable:make_list("lt 1.1"))) flag++;
if (qpkg_check(package:"dev-libs/chmlib", unaffected:make_list("ge 0.37.4"), vulnerable:make_list("lt 0.37.4"))) 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, "chmlib / KchmViewer");
}