Multiple vulnerabilities have been discovered in Expat, an XML parsing C
library. The Common Vulnerabilities and Exposures project identifies the
following problems:
CVE-2016-9063
Gustavo Grieco discovered an integer overflow flaw during parsing of
XML. An attacker can take advantage of this flaw to cause a denial
of service against an application using the Expat library.
CVE-2017-9233
Rhodri James discovered an infinite loop vulnerability within the
entityValueInitProcessor() function while parsing malformed XML
in an external entity. An attacker can take advantage of this
flaw to cause a denial of service against an application using
the Expat library.
# OpenVAS Vulnerability Test
# $Id: deb_3898.nasl 14280 2019-03-18 14:50:45Z cfischer $
# Auto-generated from advisory DSA 3898-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2017 Greenbone Networks GmbH http://greenbone.net
# 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
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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.
#
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.703898");
script_version("$Revision: 14280 $");
script_cve_id("CVE-2016-9063", "CVE-2017-9233");
script_name("Debian Security Advisory DSA 3898-1 (expat - security update)");
script_tag(name:"last_modification", value:"$Date: 2019-03-18 15:50:45 +0100 (Mon, 18 Mar 2019) $");
script_tag(name:"creation_date", value:"2017-06-25 00:00:00 +0200 (Sun, 25 Jun 2017)");
script_tag(name:"cvss_base", value:"7.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
script_xref(name:"URL", value:"http://www.debian.org/security/2017/dsa-3898.html");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (c) 2017 Greenbone Networks GmbH http://greenbone.net");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB(9|8)");
script_tag(name:"affected", value:"expat on Debian Linux");
script_tag(name:"solution", value:"For the oldstable distribution (jessie), these problems have been fixed
in version 2.1.0-6+deb8u4.
For the stable distribution (stretch), these problems have been fixed in
version 2.2.0-2+deb9u1. For the stable distribution (stretch),
CVE-2016-9063
was already fixed before the initial release.
For the testing distribution (buster), these problems have been fixed
in version 2.2.1-1 or earlier version.
For the unstable distribution (sid), these problems have been fixed in
version 2.2.1-1 or earlier version.
We recommend that you upgrade your expat packages.");
script_tag(name:"summary", value:"Multiple vulnerabilities have been discovered in Expat, an XML parsing C
library. The Common Vulnerabilities and Exposures project identifies the
following problems:
CVE-2016-9063
Gustavo Grieco discovered an integer overflow flaw during parsing of
XML. An attacker can take advantage of this flaw to cause a denial
of service against an application using the Expat library.
CVE-2017-9233
Rhodri James discovered an infinite loop vulnerability within the
entityValueInitProcessor() function while parsing malformed XML
in an external entity. An attacker can take advantage of this
flaw to cause a denial of service against an application using
the Expat library.");
script_tag(name:"vuldetect", value:"This check tests the installed software version using the apt package manager.");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
res = "";
report = "";
if((res = isdpkgvuln(pkg:"expat", ver:"2.2.0-2+deb9u1", rls:"DEB9")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"lib64expat1", ver:"2.2.0-2+deb9u1", rls:"DEB9")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"lib64expat1-dev", ver:"2.2.0-2+deb9u1", rls:"DEB9")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"libexpat1", ver:"2.2.0-2+deb9u1", rls:"DEB9")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"libexpat1-dev", ver:"2.2.0-2+deb9u1", rls:"DEB9")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"expat", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"lib64expat1", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"lib64expat1-dev", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"libexpat1", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"libexpat1-dev", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if((res = isdpkgvuln(pkg:"libexpat1-udeb", ver:"2.1.0-6+deb8u4", rls:"DEB8")) != NULL) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}