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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
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TITLE:
GNU tar "GNUTYPES_NAMES" Record Type Security Issue

SECUNIA ADVISORY ID:
SA23115

VERIFY ADVISORY:
http://secunia.com/advisories/23115/

CRITICAL:
Moderately critical

IMPACT:
Manipulation of data

WHERE:
>From remote

SOFTWARE:
GNU Tar 1.x
http://secunia.com/product/8214/

DESCRIPTION:
Teemu Salmela has reported a security issue in GNU tar, which can be
exploited by malicious people to overwrite arbitrary files.

The security issue is caused due to the "extract_archive()" function
in extract.c and the "extract_mangle()" function in mangle.c still
processing the deprecated "GNUTYPE_NAMES" record type containing
symbolic links. This can be exploited to overwrite arbitrary files by
e.g. tricking a user into unpacking a specially crafted tar file.

The security issue is reported in version 1.15.1 and 1.16. Other
versions may also be affected.

SOLUTION:
Do not extract untrusted archives.

PROVIDED AND/OR DISCOVERED BY:
Teemu Salmela

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0344.html

https://savannah.gnu.org/bugs/index.php?18355

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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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