The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3172 advisory.
An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault. (CVE-2022-40303)
An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked. (CVE-2022-40304)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3172. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(166734);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/22");
script_cve_id("CVE-2022-40303", "CVE-2022-40304");
script_name(english:"Debian DLA-3172-1 : libxml2 - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3172 advisory.
- An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the
XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to
access an array at a negative 2GB offset, typically leading to a segmentation fault. (CVE-2022-40303)
- An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a
hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be
provoked. (CVE-2022-40304)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1022224");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/libxml2");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2022/dla-3172");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-40303");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-40304");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/libxml2");
script_set_attribute(attribute:"solution", value:
"Upgrade the libxml2 packages.
For Debian 10 buster, these problems have been fixed in version 2.9.4+dfsg1-7+deb10u5.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-40304");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/10/30");
script_set_attribute(attribute:"patch_publication_date", value:"2022/10/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/31");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxml2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxml2-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-libxml2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-libxml2-dbg");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var 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, 'Debian', cpu);
var pkgs = [
{'release': '10.0', 'prefix': 'libxml2', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'libxml2-dbg', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'libxml2-dev', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'libxml2-doc', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'libxml2-utils', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'python-libxml2', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'python-libxml2-dbg', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'python3-libxml2', 'reference': '2.9.4+dfsg1-7+deb10u5'},
{'release': '10.0', 'prefix': 'python3-libxml2-dbg', 'reference': '2.9.4+dfsg1-7+deb10u5'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var _release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (_release && prefix && reference) {
if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libxml2 / libxml2-dbg / libxml2-dev / libxml2-doc / libxml2-utils / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | libxml2 | p-cpe:/a:debian:debian_linux:libxml2 |
debian | debian_linux | libxml2-dbg | p-cpe:/a:debian:debian_linux:libxml2-dbg |
debian | debian_linux | libxml2-dev | p-cpe:/a:debian:debian_linux:libxml2-dev |
debian | debian_linux | libxml2-doc | p-cpe:/a:debian:debian_linux:libxml2-doc |
debian | debian_linux | libxml2-utils | p-cpe:/a:debian:debian_linux:libxml2-utils |
debian | debian_linux | python-libxml2 | p-cpe:/a:debian:debian_linux:python-libxml2 |
debian | debian_linux | python-libxml2-dbg | p-cpe:/a:debian:debian_linux:python-libxml2-dbg |
debian | debian_linux | python3-libxml2 | p-cpe:/a:debian:debian_linux:python3-libxml2 |
debian | debian_linux | python3-libxml2-dbg | p-cpe:/a:debian:debian_linux:python3-libxml2-dbg |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40303
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40304
bugs.debian.org/cgi-bin/bugreport.cgi?bug=1022224
packages.debian.org/source/buster/libxml2
security-tracker.debian.org/tracker/CVE-2022-40303
security-tracker.debian.org/tracker/CVE-2022-40304
security-tracker.debian.org/tracker/source-package/libxml2
www.debian.org/lts/security/2022/dla-3172