CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
47.1%
The remote host is affected by the vulnerability described in GLSA-202402-11 (libxml2: Multiple Vulnerabilities)
In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c. (CVE-2023-28484)
An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the ‘\0’ value). (CVE-2023-29469)
libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails.
This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor’s position is I don’t think these issues are critical enough to warrant a CVE ID … because an attacker typically can’t control when memory allocations fail. (CVE-2023-45322)
An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free. (CVE-2024-25062)
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.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202402-11.
#
# The advisory text is Copyright (C) 2001-2021 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('compat.inc');
if (description)
{
script_id(190354);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/13");
script_cve_id(
"CVE-2023-28484",
"CVE-2023-29469",
"CVE-2023-45322",
"CVE-2024-25062"
);
script_name(english:"GLSA-202402-11 : libxml2: Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"");
script_set_attribute(attribute:"description", value:
"The remote host is affected by the vulnerability described in GLSA-202402-11 (libxml2: Multiple Vulnerabilities)
- In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference
and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c. (CVE-2023-28484)
- An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML
document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic
and memory errors, such as a double free. This behavior occurs because there is an attempt to use the
first byte of an empty string, and any value is possible (not solely the '\0' value). (CVE-2023-29469)
- libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails.
This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is I don't think these issues are
critical enough to warrant a CVE ID ... because an attacker typically can't control when memory
allocations fail. (CVE-2023-45322)
- An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader
interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to
an xmlValidatePopElement use-after-free. (CVE-2024-25062)
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://security.gentoo.org/glsa/202402-11");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=904202");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=905399");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=915351");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=923806");
script_set_attribute(attribute:"solution", value:
"All libxml2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose >=dev-libs/libxml2-2.12.5
If you cannot update to libxml2-2.12 yet you can update to the latest 2.11 version:
# emerge --sync
# emerge --ask --oneshot --verbose >=dev-libs/libxml2-2.11.7 =dev-libs/libxml2-2.11*");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2024-25062");
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:"2023/04/13");
script_set_attribute(attribute:"patch_publication_date", value:"2024/02/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/09");
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) 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('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);
var flag = 0;
var packages = [
{
'name' : 'dev-libs/libxml2',
'unaffected' : make_list("ge 2.12.5"),
'vulnerable' : make_list("lt 2.12.5")
}
];
foreach var package( packages ) {
if (isnull(package['unaffected'])) package['unaffected'] = make_list();
if (isnull(package['vulnerable'])) package['vulnerable'] = make_list();
if (qpkg_check(package: package['name'] , unaffected: package['unaffected'], vulnerable: package['vulnerable'])) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : qpkg_report_get()
);
exit(0);
}
else
{
qpkg_tests = list_uniq(qpkg_tests);
var 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-2023-28484
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29469
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45322
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25062
bugs.gentoo.org/show_bug.cgi?id=904202
bugs.gentoo.org/show_bug.cgi?id=905399
bugs.gentoo.org/show_bug.cgi?id=915351
bugs.gentoo.org/show_bug.cgi?id=923806
security.gentoo.org/glsa/202402-11
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
47.1%