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Insecure Library Loading
Moderately critical

libarchive pax Extension Header Denial of Service and Buffer Overflow

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Release Date:  2007-07-13    Last Update:  2008-03-21    Views:  12,761

Secunia Advisory SA26050

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in libarchive, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise an application using the library.

The vulnerabilities are caused due to a NULL pointer dereference, an infinite loop, and a buffer overflow when processing certain malformed pax extension headers. These can be exploited to crash an application, cause a high CPU load or potentially execute arbitrary code by tricking a user or automated system to process a specially crafted archive file with an application using the library.

The vulnerabilities are reported in versions prior to 2.2.4.


Solution:
Update to version 2.2.4.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The FreeBSD advisory credits CPNI, CERT-FI, Tim Kientzle, and Colin Percival.

Original Advisory:
http://security.freebsd.org/advisories/FreeBSD-SA-07:05.libarchive.asc

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: libarchive pax Extension Header Denial of Service and Buffer Overflow

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