CVSup-Mirror Insecure Temporary Files Vulnerability

BID:6150

Info

CVSup-Mirror Insecure Temporary Files Vulnerability

Bugtraq ID: 6150
Class: Configuration Error
CVE: CVE-2003-0606
Remote: No
Local: Yes
Published: Nov 09 2002 12:00AM
Updated: Jul 12 2009 05:56PM
Credit: Discovery of this issue is credited to Joshua Goodall <[email protected]>.
Vulnerable: sup sup 1.8
CVSup cvsup-mirror 1.2
Not Vulnerable:

Discussion

CVSup-Mirror Insecure Temporary Files Vulnerability

cvsup-mirror is prone to a vulnerability which may enable local attackers to corrupt critical system files.

cvsup-mirror creates a file entitled 'cvsupd.out' in the /var/tmp/ directory. A local attacker could create a symbolic link in /var/tmp with the same name, pointing to critical system files.

Any actions performed by cvsup-mirror on 'cvsupd.out' will instead be performed on files pointed to by the symbolic link. This may result in a denial of service if critical files are overwritten, and may potentially allow for privilege escalation.

Exploit / POC

CVSup-Mirror Insecure Temporary Files Vulnerability

There is no exploit code required.

Solution / Fix

CVSup-Mirror Insecure Temporary Files Vulnerability

Solution:
Debian has released fixes for this issue. See referenced advisory for additional details.


sup sup 1.8

References

CVSup-Mirror Insecure Temporary Files Vulnerability

References:

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