9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.007 Low
EPSS
Percentile
80.0%
Chris Evans discovered that libxml2 incorrectly handled memory allocation. If an application using libxml2 opened a specially crafted XML file, an attacker could cause a denial of service or possibly execute code as the user invoking the program.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1153-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include("compat.inc");
if (description)
{
script_id(55168);
script_version("1.13");
script_cvs_date("Date: 2019/09/19 12:54:27");
script_cve_id("CVE-2011-1944");
script_bugtraq_id(48056);
script_xref(name:"USN", value:"1153-1");
script_name(english:"Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 : libxml2 vulnerability (USN-1153-1)");
script_summary(english:"Checks dpkg output for updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Ubuntu host is missing a security-related patch."
);
script_set_attribute(
attribute:"description",
value:
"Chris Evans discovered that libxml2 incorrectly handled memory
allocation. If an application using libxml2 opened a specially crafted
XML file, an attacker could cause a denial of service or possibly
execute code as the user invoking the program.
Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
);
script_set_attribute(
attribute:"see_also",
value:"https://usn.ubuntu.com/1153-1/"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected libxml2 package."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.04");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/09/02");
script_set_attribute(attribute:"patch_publication_date", value:"2011/06/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/17");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Ubuntu Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(8\.04|10\.04|10\.10|11\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04 / 10.04 / 10.10 / 11.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2", pkgver:"2.6.31.dfsg-2ubuntu1.6")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libxml2", pkgver:"2.7.6.dfsg-1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libxml2", pkgver:"2.7.7.dfsg-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"libxml2", pkgver:"2.7.8.dfsg-2ubuntu0.1")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2");
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | libxml2 | p-cpe:/a:canonical:ubuntu_linux:libxml2 |
canonical | ubuntu_linux | 10.04 | cpe:/o:canonical:ubuntu_linux:10.04:-:lts |
canonical | ubuntu_linux | 10.10 | cpe:/o:canonical:ubuntu_linux:10.10 |
canonical | ubuntu_linux | 11.04 | cpe:/o:canonical:ubuntu_linux:11.04 |
canonical | ubuntu_linux | 8.04 | cpe:/o:canonical:ubuntu_linux:8.04:-:lts |