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Mac OS X pty Permission Security Issue
Secunia Advisory: SA15224
Release Date: 2005-05-04
Last Update: 2005-05-09
Popularity: 8,013 views

Critical:
Less critical
Impact: Exposure of sensitive information
Where: Local system
Solution Status: Vendor Patch

OS:Apple Macintosh OS X

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CVE reference:CVE-2005-1430


Description:
Matt Johnston has discovered a security issue in Mac OS X, which can be exploited by malicious, local users to gain knowledge of potentially sensitive information.

The problem is that non-setuid root applications can't change the permissions of ptys. This can be exploited to sniff other users' ttys opened via non-setuid root applications (e.g. screen).

The security problem has been confirmed in version 10.3.9. Prior versions may also be affected.

Solution:
The security problem has reportedly been fixed in version 10.4.

Provided and/or discovered by:
Matt Johnston

Changelog:
2005-05-09: Added CVE reference.


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