7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.582 Medium
EPSS
Percentile
97.7%
The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5455-1 advisory.
Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context- dependent attackers to cause a denial of service (memory consumption) via a large number of crafted XML files that cause improperly-handled reallocation failures when expanding entities. (CVE-2012-1148)
Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted XML data, a related issue to CVE-2015-2716. (CVE-2015-1283)
Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow. (CVE-2016-0718)
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
(CVE-2016-4472)
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks). (CVE-2018-20843)
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read. (CVE-2019-15903)
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize. (CVE-2021-46143)
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22822)
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22823)
defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
(CVE-2022-22824)
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22825)
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
(CVE-2022-22826)
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22827)
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context. (CVE-2022-25235)
xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs. (CVE-2022-25236)
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 Ubuntu Security Notice USN-5455-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(183151);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/17");
script_cve_id(
"CVE-2012-1148",
"CVE-2015-1283",
"CVE-2016-0718",
"CVE-2016-4472",
"CVE-2018-20843",
"CVE-2019-15903",
"CVE-2021-46143",
"CVE-2022-22822",
"CVE-2022-22823",
"CVE-2022-22824",
"CVE-2022-22825",
"CVE-2022-22826",
"CVE-2022-22827",
"CVE-2022-25235",
"CVE-2022-25236"
);
script_xref(name:"USN", value:"5455-1");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM : xmltok library vulnerabilities (USN-5455-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-5455-1 advisory.
- Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context-
dependent attackers to cause a denial of service (memory consumption) via a large number of crafted XML
files that cause improperly-handled reallocation failures when expanding entities. (CVE-2012-1148)
- Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome
before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based
buffer overflow) or possibly have unspecified other impact via crafted XML data, a related issue to
CVE-2015-2716. (CVE-2015-1283)
- Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute
arbitrary code via a malformed input document, which triggers a buffer overflow. (CVE-2016-0718)
- The overflow protection in Expat is removed by compilers with certain optimization settings, which allows
remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML
data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
(CVE-2016-4472)
- In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons
could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be
usable for denial-of-service attacks). (CVE-2018-20843)
- In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to
document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber)
then resulted in a heap-based buffer over-read. (CVE-2019-15903)
- In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for
m_groupSize. (CVE-2021-46143)
- addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22822)
- build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22823)
- defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
(CVE-2022-22824)
- lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22825)
- nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
(CVE-2022-22826)
- storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22827)
- xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks
for whether a UTF-8 character is valid in a certain context. (CVE-2022-25235)
- xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters
into namespace URIs. (CVE-2022-25236)
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://ubuntu.com/security/notices/USN-5455-1");
script_set_attribute(attribute:"solution", value:
"Update the affected libxmltok1 and / or libxmltok1-dev 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:"cvss_score_source", value:"CVE-2022-25236");
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:"2012/03/09");
script_set_attribute(attribute:"patch_publication_date", value:"2022/07/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:esm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxmltok1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxmltok1-dev");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2023 Canonical, Inc. / NASL script (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '16.04', 'pkgname': 'libxmltok1', 'pkgver': '1.2-3ubuntu0.16.04.1~esm2'},
{'osver': '16.04', 'pkgname': 'libxmltok1-dev', 'pkgver': '1.2-3ubuntu0.16.04.1~esm2'},
{'osver': '18.04', 'pkgname': 'libxmltok1', 'pkgver': '1.2-4ubuntu0.18.04.1~esm1'},
{'osver': '18.04', 'pkgname': 'libxmltok1-dev', 'pkgver': '1.2-4ubuntu0.18.04.1~esm1'},
{'osver': '20.04', 'pkgname': 'libxmltok1', 'pkgver': '1.2-4ubuntu0.20.04.1~esm1'},
{'osver': '20.04', 'pkgname': 'libxmltok1-dev', 'pkgver': '1.2-4ubuntu0.20.04.1~esm1'},
{'osver': '22.04', 'pkgname': 'libxmltok1', 'pkgver': '1.2-4ubuntu0.22.04.1~esm1'},
{'osver': '22.04', 'pkgname': 'libxmltok1-dev', 'pkgver': '1.2-4ubuntu0.22.04.1~esm1'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libxmltok1 / libxmltok1-dev');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:esm |
canonical | ubuntu_linux | 18.04 | cpe:/o:canonical:ubuntu_linux:18.04:-:esm |
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:esm |
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:esm |
canonical | ubuntu_linux | libxmltok1 | p-cpe:/a:canonical:ubuntu_linux:libxmltok1 |
canonical | ubuntu_linux | libxmltok1-dev | p-cpe:/a:canonical:ubuntu_linux:libxmltok1-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1148
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1283
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0718
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4472
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20843
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15903
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46143
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22822
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22823
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22824
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22825
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22826
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22827
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25235
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25236
ubuntu.com/security/notices/USN-5455-1
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.582 Medium
EPSS
Percentile
97.7%