Debian Security Advisory DSA 2417-1 (libxml2)

# OpenVAS Vulnerability Test
# $Id: deb_2417_1.nasl 6612 2017-07-07 12:08:03Z cfischer $
# Description: Auto-generated from advisory DSA 2417-1 (libxml2)
#
# Authors:
# Thomas Reinke <[email protected]>
#
# Copyright:
# Copyright (c) 2012 E-Soft Inc. http://www.securityspace.com
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2,
# or at your option, GNU General Public License version 3,
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#

include("revisions-lib.inc");
tag_insight = "It was discovered that the internal hashing routine of libxml2,
a library providing an extensive API to handle XML data, is vulnerable to
predictable hash collisions.  Given an attacker with knowledge of the
hashing algorithm, it is possible to craft input that creates a large
amount of collisions.  As a result it is possible to perform denial of
service attacks against applications using libxml2 functionality because
of the computational overhead.


For the stable distribution (squeeze), this problem has been fixed in
version 2.7.8.dfsg-2+squeeze3.

For the testing (wheezy) and unstable (sid) distributions, this problem
will be fixed soon.

We recommend that you upgrade your libxml2 packages.";
tag_summary = "The remote host is missing an update to libxml2
announced via advisory DSA 2417-1.";

tag_solution = "https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202417-1";

if(description)
{
 script_id(71143);
 script_cve_id("CVE-2012-0841");
 script_version("$Revision: 6612 $");
 script_tag(name:"last_modification", value:"$Date: 2017-07-07 14:08:03 +0200 (Fri, 07 Jul 2017) $");
 script_tag(name:"creation_date", value:"2012-03-12 11:31:39 -0400 (Mon, 12 Mar 2012)");
 script_tag(name:"cvss_base", value:"5.0");
 script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
 script_name("Debian Security Advisory DSA 2417-1 (libxml2)");



 script_category(ACT_GATHER_INFO);

 script_copyright("Copyright (c) 2012 E-Soft Inc. http://www.securityspace.com");
 script_family("Debian Local Security Checks");
 script_dependencies("gather-package-list.nasl");
 script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages");
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "insight" , value : tag_insight);
 script_tag(name : "summary" , value : tag_summary);
 script_tag(name:"qod_type", value:"package");
 script_tag(name:"solution_type", value:"VendorFix");
 exit(0);
}

#
# The script code starts here
#

include("pkg-lib-deb.inc");
res = "";
report = "";
if((res = isdpkgvuln(pkg:"libxml2", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"libxml2-dbg", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"libxml2-dev", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"libxml2-doc", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"libxml2-utils", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"python-libxml2", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if((res = isdpkgvuln(pkg:"python-libxml2-dbg", ver:"2.7.8.dfsg-2+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}

if(report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99); # Not vulnerable.
}