Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

BID:32740

Info

Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

Bugtraq ID: 32740
Class: Design Error
CVE: CVE-2008-5366
Remote: No
Local: Yes
Published: Aug 11 2008 12:00AM
Updated: Dec 12 2008 05:11PM
Credit: Dmitry E. Oboukhov
Vulnerable: Debian ppp-udeb 2.4.4rel
Not Vulnerable:

Discussion

Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

The 'postinst' script in Debian ppp creates temporary files in an insecure manner.

An attacker with local access could potentially exploit these issues to perform symbolic-link attacks, overwriting arbitrary files in the context of the affected application.

Successfully mounting a symlink attack may allow the attacker to delete or corrupt sensitive files, which may result in a denial of service. Other attacks may also be possible.

Debian 'ppp' 2.4.4rel is vulnerable; other versions may also be affected.

Exploit / POC

Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

An attacker uses readily available commands to launch attacks.

Solution / Fix

Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

References

Debian 'ppp' Insecure Temporary File Creation Vulnerabilities

References:

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