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Debian Security Advisory DSA 2770-1 (torque - authentication bypass)

Information

Severity

Severity

Critical

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

9.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

9 years ago

Modified

Modified

1 year ago

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.

Affected Software

Affected Software

torque on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

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.

Common Vulnerabilities and Exposures (CVE)