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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

Download and test it today:
https://psi.secunia.com/

Read more about this new version:
https://psi.secunia.com/?page=changelog

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TITLE:
OpenAFS File Server Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA28327

VERIFY ADVISORY:
http://secunia.com/advisories/28327/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From local network

SOFTWARE:
OpenAFS 1.x
http://secunia.com/product/3151/

DESCRIPTION:
A vulnerability has been reported in OpenAFS, which can be exploited
by malicious users to cause a DoS (Denial od Service).

The vulnerability is caused due to a race condition error within the
"GiveUpAllCallBacks" RPC handler and can be exploited to crash the
file server by simultaneously acquiring and giving back callbacks on
a file.

The vulnerability is reported in the following versions:
* OpenAFS 1.3.x subsequent to 1.3.50
* OpenAFS 1.4.x up to and including OpenAFS 1.4.5
* OpenAFS 1.5.x up to and including OpenAFS 1.5.27

SOLUTION:
OpenAFS 1.4.x:
Update to version 1.4.6.
http://www.openafs.org/release/latest.html

OpenAFS 1.5.x:
Fixed in Feature Release 1.5.28.
http://www.openafs.org/release/latest-unstable.html

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Russ Allbery, Jeffrey Altman, Dan Hyde, and Thomas
Mueller.

ORIGINAL ADVISORY:
http://www.openafs.org/security/OPENAFS-SA-2007-003.txt

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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