John Fitzpatrick of MWR InfoSecurity discovered an authentication bypass
vulnerability in torque, a PBS-derived batch processing queueing system.
The torque authentication model revolves around the use of privileged
ports. If a request is not made from a privileged port then it is
assumed not to be trusted or authenticated. It was found that pbs_mom
does not perform a check to ensure that connections are established
from a privileged port.
A user who can run jobs or login to a node running pbs_server or pbs_mom
can exploit this vulnerability to remotely execute code as root on the
cluster by submitting a command directly to a pbs_mom daemon
to queue and run a job.
# OpenVAS Vulnerability Test
# $Id: deb_2770.nasl 6611 2017-07-07 12:07:20Z cfischer $
# Auto-generated from advisory DSA 2770-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2013 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.
#
include("revisions-lib.inc");
tag_affected = "torque on Debian Linux";
tag_insight = "The TORQUE server dispatches jobs across physically separated machines. It
may also be beneficial for single machines to organise the sequential execution
of multiple jobs.";
tag_solution = "For the oldstable distribution (squeeze), this problem has been fixed in
version 2.4.8+dfsg-9squeeze2.
For the stable distribution (wheezy), this problem has been fixed in
version 2.4.16+dfsg-1+deb7u1.
For the unstable distribution (sid), this problem will be fixed soon.
We recommend that you upgrade your torque packages.";
tag_summary = "John Fitzpatrick of MWR InfoSecurity discovered an authentication bypass
vulnerability in torque, a PBS-derived batch processing queueing system.
The torque authentication model revolves around the use of privileged
ports. If a request is not made from a privileged port then it is
assumed not to be trusted or authenticated. It was found that pbs_mom
does not perform a check to ensure that connections are established
from a privileged port.
A user who can run jobs or login to a node running pbs_server or pbs_mom
can exploit this vulnerability to remotely execute code as root on the
cluster by submitting a command directly to a pbs_mom daemon
to queue and run a job.";
tag_vuldetect = "This check tests the installed software version using the apt package manager.";
if(description)
{
script_id(892770);
script_version("$Revision: 6611 $");
script_cve_id("CVE-2013-4319");
script_name("Debian Security Advisory DSA 2770-1 (torque - authentication bypass)");
script_tag(name: "last_modification", value:"$Date: 2017-07-07 14:07:20 +0200 (Fri, 07 Jul 2017) $");
script_tag(name: "creation_date", value:"2013-10-09 00:00:00 +0200 (Wed, 09 Oct 2013)");
script_tag(name: "cvss_base", value:"9.0");
script_tag(name: "cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
script_xref(name: "URL", value: "http://www.debian.org/security/2013/dsa-2770.html");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (c) 2013 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");
script_tag(name: "affected", value: tag_affected);
script_tag(name: "insight", value: tag_insight);
# script_tag(name: "impact", value: tag_impact);
script_tag(name: "solution", value: tag_solution);
script_tag(name: "summary", value: tag_summary);
script_tag(name: "vuldetect", value: tag_vuldetect);
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("pkg-lib-deb.inc");
res = "";
report = "";
if ((res = isdpkgvuln(pkg:"libtorque2", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libtorque2-dev", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-client", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-client-x11", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-common", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-mom", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-pam", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-scheduler", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-server", ver:"2.4.8+dfsg-9squeeze2", rls:"DEB6.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libtorque2", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libtorque2-dev", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-client", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-client-x11", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-common", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-mom", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-pam", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-scheduler", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"torque-server", ver:"2.4.16+dfsg-1+deb7u1", rls:"DEB7.0")) != NULL) {
report += res;
}
if (report != "") {
security_message(data:report);
} else if (__pkg_match) {
exit(99); # Not vulnerable.
}