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Bug#: 156578
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Status: RESOLVED
Resolution: DUPLICATE of bug 155901
Assigned To: Gentoo Linux bug wranglers <bug-wranglers@gentoo.org>
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Reporter: Pavel Shirov <passnet@zmail.ru>
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Description:   Opened: 2006-11-29 00:25 0000 
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.

One solution is for GNUTYPE_NAMES processing to be disabled by default.

Original Advisory:
http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0344.html

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

------- Comment #1 From Jakub Moc (RETIRED) 2006-11-29 00:38:32 0000 ------- 

*** This bug has been marked as a duplicate of 155901 ***
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