CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
87.9%
The remote host is affected by the vulnerability described in GLSA-202107-05 (libxml2: Multiple vulnerabilities)
Multiple vulnerabilities have been discovered in libxml2. Please review the CVE identifiers referenced below for details.
Impact :
A remote attacker could entice a user to process a specially crafted XML document using an application linked against libxml2, possibly resulting in a Denial of Service condition or obtaining sensitive information.
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 202107-05.
#
# The advisory text is Copyright (C) 2001-2024 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(156968);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/16");
script_cve_id(
"CVE-2020-24977",
"CVE-2021-3516",
"CVE-2021-3517",
"CVE-2021-3518",
"CVE-2021-3537",
"CVE-2021-3541"
);
script_xref(name:"GLSA", value:"202107-05");
script_name(english:"GLSA-202107-05 : libxml2: Multiple vulnerabilities");
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-202107-05
(libxml2: Multiple vulnerabilities)
Multiple vulnerabilities have been discovered in libxml2. Please review
the CVE identifiers referenced below for details.
Impact :
A remote attacker could entice a user to process a specially crafted XML
document using an application linked against libxml2, possibly resulting
in a Denial of Service condition or obtaining sensitive information.
Workaround :
There is no known workaround at this time.");
script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/202107-05");
script_set_attribute(attribute:"solution", value:
"All libxml2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/libxml2-2.9.12-r3'");
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:R/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-2021-3517");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-3518");
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:"2020/09/04");
script_set_attribute(attribute:"patch_publication_date", value:"2021/07/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/01/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:libxml2");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Gentoo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"dev-libs/libxml2", unaffected:make_list("ge 2.9.11"), vulnerable:make_list("lt 2.9.11"))) 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, "libxml2");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24977
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3516
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3517
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3518
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3537
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3541
security.gentoo.org/glsa/202107-05
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
87.9%