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IBM AIX rm_mlcache_file Arbitrary File Overwrite
Secunia Advisory: SA19656
Release Date: 2006-04-18
Last Update: 2006-04-24
Popularity: 8,113 views

Critical:
Less critical
Impact: Manipulation of data
Where: Local system
Solution Status: Vendor Patch

OS:AIX 5.x

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CVE reference:CVE-2006-1247


Description:
Yang Jilong has reported a vulnerability in AIX, which can be exploited by malicious, local users to perform certain actions with escalated privileges.

The vulnerability is caused due to a race condition in the "rm_mlcache_file" command when processing temporary files. This makes it possible to overwrite the contents of arbitrary files.

Solution:
Apply Interim fix until APARs are available.

Interim fix:
ftp://aix.software.ibm.com/aix/efixes/security/rm_mlcache_file_ifix.tar.Z

APAR for AIX 5.1.0:
IY82866 (available approx. 2006-07-19).

APAR for AIX 5.2.0:
IY82285 (available approx. 2006-04-26).

APAR for AIX 5.3.0:
IY82357 (available).

Provided and/or discovered by:
Yang Jilong, NSFocus Security Team.

Changelog:
2006-04-24: Added additional information.

Original Advisory:
NSFOCUS:
http://www.nsfocus.com/english/homepage/research/0603.htm


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