CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
95.0%
The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has libxml2 packages installed that are affected by multiple vulnerabilities:
Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function. (CVE-2016-5131)
Use after free in libxml2 before 2.9.5, as used in Google Chrome prior to 63.0.3239.84 and other products, allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2017-15412)
A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.
Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application. (CVE-2018-14404)
libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251. (CVE-2018-14567)
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file. (CVE-2017-18258)
The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.
(CVE-2015-8035)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2020-0060. The text
# itself is copyright (C) ZTE, Inc.
##
include('compat.inc');
if (description)
{
script_id(143906);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/05");
script_cve_id(
"CVE-2015-8035",
"CVE-2016-5131",
"CVE-2017-15412",
"CVE-2017-18258",
"CVE-2018-14404",
"CVE-2018-14567"
);
script_bugtraq_id(
77390,
92053,
102098,
105198
);
script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : libxml2 Multiple Vulnerabilities (NS-SA-2020-0060)");
script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has libxml2 packages installed that are affected
by multiple vulnerabilities:
- Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82,
allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors
related to the XPointer range-to function. (CVE-2016-5131)
- Use after free in libxml2 before 2.9.5, as used in Google Chrome prior to 63.0.3239.84 and other products,
allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2017-15412)
- A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2
through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.
Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable
to a denial of service attack due to a crash of the application. (CVE-2018-14404)
- libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite
loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different
vulnerability than CVE-2015-8035 and CVE-2018-9251. (CVE-2018-14567)
- The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of
service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict
memory usage to what is required for a legitimate file. (CVE-2017-18258)
- The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which
allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.
(CVE-2015-8035)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2020-0060");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL libxml2 packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
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: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-2017-15412");
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:"2015/11/02");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"NewStart CGSL Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");
exit(0);
}
include('audit.inc');
include('global_settings.inc');
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item('Host/ZTE-CGSL/release');
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');
if (release !~ "CGSL CORE 5.04" &&
release !~ "CGSL MAIN 5.04")
audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');
if (!get_kb_item('Host/ZTE-CGSL/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);
flag = 0;
pkgs = {
'CGSL CORE 5.04': [
'libxml2-2.9.1-6.el7.4',
'libxml2-debuginfo-2.9.1-6.el7.4',
'libxml2-devel-2.9.1-6.el7.4',
'libxml2-python-2.9.1-6.el7.4',
'libxml2-static-2.9.1-6.el7.4'
],
'CGSL MAIN 5.04': [
'libxml2-2.9.1-6.el7.4',
'libxml2-debuginfo-2.9.1-6.el7.4',
'libxml2-devel-2.9.1-6.el7.4',
'libxml2-python-2.9.1-6.el7.4',
'libxml2-static-2.9.1-6.el7.4'
]
};
pkg_list = pkgs[release];
foreach (pkg in pkg_list)
if (rpm_check(release:'ZTE ' + release, reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_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-2015-8035
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5131
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15412
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18258
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14404
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14567
security.gd-linux.com/notice/NS-SA-2020-0060
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
95.0%