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Insecure Library Loading
Not critical

Symantec AntiVirus for Macintosh Privilege Escalation Weakness

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Release Date:  2007-11-02    Last Update:  2007-11-06    Views:  10,878

Secunia Advisory SA27488

Where:

Local system

Impact:

Privilege escalation

Solution Status:

Vendor Workaround

CVE Reference(s):

Description


A weakness has been reported in Symantec AntiVirus for Macintosh and Norton AntiVirus for Macintosh, which can be exploited by malicious, local users to gain escalated privileges.

The weakness is caused due to insecure permissions on the "/Library/Application Support" folder. This can be exploited to execute arbitrary code as the "root" user by e.g. replacing a certain application within the affected folder or tricking the Disk Mount scanner into launching an arbitrary executable by renaming folders.

Successful exploitation requires membership of the "admin" group and that "mount scanning" is enabled and configured to show the progress.

The weakness is reported in Norton AntiVirus for Macintosh 9.x-10.x, Norton Internet Security for Macintosh 3.x, Symantec AntiVirus for Macintosh 10.0 and 10.1. Linux and Windows versions are not affected.


Solution:
The vendor recommends disabling "Show Progress During Mount Scans" and setting the sticky bit for the folder "Library/Application Support" (see the vendor's advisory for details).

Provided and/or discovered by:
William Carrel.

Original Advisory:
Symantec:
http://securityresponse.symantec.com/avcenter/security/Content/2007.11.02.html

William Carrel:
http://blog.carrel.org/2007/11/security-advisory-norton-antivirus-for.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Symantec AntiVirus for Macintosh Privilege Escalation Weakness

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