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Debian Security Advisory DSA-2770-1                   security@debian.org
http://www.debian.org/security/                      Salvatore Bonaccorso
October 09, 2013                       http://www.debian.org/security/faq
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Package        : torque
Vulnerability  : authentication bypass
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2013-4319
Debian Bug     : 722306

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.

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.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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