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OpenAFS: Arbitrary code execution

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201101-05 / OpenAFS
Release Date January 16, 2011
Latest Revision January 16, 2011: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-fs/openafs < 1.4.9 >= 1.4.9 All supported architectures

Related bugreports: #265538

Synopsis

The cache manager of OpenAFS contains several bugs resulting in remote execution of arbitrary code.

2.  Impact Information

Background

OpenAFS is a distributed file system.

Description

Two vulnerabilities were discovered:

  • Simon Wilkinson discovered from a bug report by Toby Blake that the cache manager of OpenAFS contains a heap-based buffer overflow which is related to the use of the ERR_PTR macro (CVE-2009-1250).
  • A pointer dereference bug when using XDR arrays was discovered by Simon Wilkinson, with assistance from Derrick Brashear and Jeffrey Altman. (CVE-2009-1251).

Impact

The vulnerabilities might allow remote unauthenticated attackers to cause a Denial of Service (system crash) and possibly execute arbitrary code.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All OpenAFS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/openafs-1.4.9"

4.  References



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Page updated January 16, 2011

Summary: This is a Gentoo Linux Security Advisory

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