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Microsoft Virtual PC for Mac Insecure Temporary Files Creation
Secunia Advisory: SA10836
Release Date: 2004-02-10
Last Update: 2004-02-25
Popularity: 8,512 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

Software:Microsoft Virtual PC for Mac 6.x

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CVE reference:CVE-2004-0115


Description:
George Gal has discovered a vulnerability in Microsoft Virtual PC for Mac, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to insecure creation of the temporary log file "/tmp/VPCServices_Log" during execution. This can be exploited via symlink attacks to gain root privileges or overwrite arbitrary files.

Solution:
Apply patch.

Microsoft Virtual PC for Mac version 6.0:
http://www.microsoft.com/mac/download...d=100&ssid=1&flgnosysreq=True

Microsoft Virtual PC for Mac version 6.01:
http://www.microsoft.com/mac/download...d=100&ssid=1&flgnosysreq=True

Microsoft Virtual PC for Mac version 6.02:
http://www.microsoft.com/mac/download...d=100&ssid=1&flgnosysreq=True

Microsoft Virtual PC for Mac version 6.1:
http://www.microsoft.com/mac/download...d=100&ssid=1&flgnosysreq=True

Provided and/or discovered by:
George Gal, @stake.

Changelog:
2004-02-25: Added CERT reference.

Original Advisory:
MS04-005:
http://www.microsoft.com/technet/security/bulletin/MS04-005.asp

@stake:
http://www.atstake.com/research/advisories/2004/a021004-1.txt

Other References:
CERT VU#987118
http://www.kb.cert.org/vuls/id/987118


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