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2003: 2,700 advisories published
2004: 3,100 advisories published
2005: 4,600 advisories published
2006: 5,300 advisories published

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TITLE:
Zsh difflog.pl Insecure Temporary Files

SECUNIA ADVISORY ID:
SA27899

VERIFY ADVISORY:
http://secunia.com/advisories/27899/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Zsh 4.x
http://secunia.com/product/16771/

DESCRIPTION:
A security issue has been reported in Zsh, which can be exploited by
malicious, local users to perform certain actions with escalated
privileges.

The security issue is caused due to the Util/difflog.pl script using
temporary files in an insecure manner. This can be exploited to
overwrite or delete arbitrary files via symlink attacks.

The security issue is reported in version 4.3.4. Other versions may
also be affected.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Gentoo credits Elias Pipping.

ORIGINAL ADVISORY:
https://bugs.gentoo.org/show_bug.cgi?id=201022

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About:
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