[ Suresec Advisories ] - Mac OS X 10.4 - launchd local root vulnerability

[[ Suresec Advisories ]]

Securesec Security Advisory - #00003
09/06/05

Apple Mac OS X 10.4 launchd race condition vulnerability
Advisory: http://www.suresec.org/advisories/adv3.pdf

Description:

A race condition vulnerability has been found in the temporary file
creation done by the suid launchd program on Mac OSX 10.4.
The for advisory for this can be downloaded from the Suresec website.

Risk:

Successful exploitation of this vulnerability results in stolen
ownership of any file on the system. Using this it is trivial to get
a root shell.

Credit:

The vulnerability was discovered by Neil Archibald and Ilja Van Sprundel
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

[Peter Bierman]

Post by [ Suresec Advisories ]
Securesec Security Advisory - #00003
09/06/05
Apple Mac OS X 10.4 launchd race condition vulnerability
Advisory: http://www.suresec.org/advisories/adv3.pdf
A race condition vulnerability has been found in the temporary file
creation done by the suid launchd program on Mac OSX 10.4.
The for advisory for this can be downloaded from the Suresec website.
Successful exploitation of this vulnerability results in stolen
ownership of any file on the system. Using this it is trivial to get
a root shell.

Is this fixed by the security update issued by apple some days ago?

Yes, this is fixed in Security Update 2005-006.
<http://docs.info.apple.com/article.html?artnum=301742>

launchd
CVE-ID: CAN-2005-1725
Available for: Mac OS X v10.4.1, Mac OS X Server v10.4.1
Impact: The setuid program launchd can allow local privilege escalation.
Description: A vulnerability in launchd allows local users to gain
ownership of arbitrary files. The launchd command is updated to
safely change ownership of files. Credit to Neil Archibald of Suresec
LTD for reporting this issue. This issue does not affect systems
prior to Mac OS X v10.4.

-pmb
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/