Multiple Vendor xfs Symlink Vulnerability

BID:359

Info

Multiple Vendor xfs Symlink Vulnerability

Bugtraq ID: 359
Class: Origin Validation Error
CVE: CVE-1999-0434
Remote: No
Local: Yes
Published: Mar 30 1999 12:00AM
Updated: Jul 11 2009 12:16AM
Credit: First posted to BugTraq by Lukasz Trabinski <[email protected]> on March 30, 1999.
Vulnerable: SuSE Linux 5.3
Redhat Linux 5.1
- Standard & Poors ComStock 4.2.4
Pacific HiTech TurboLinux 1.2
NetBSD NetBSD 1.3.3
Debian Linux 2.1
Debian Linux 2.0 r5
Debian Linux 2.0
Caldera OpenLinux Standard 1.2
Not Vulnerable:

Discussion

Multiple Vendor xfs Symlink Vulnerability

Xfs, the Xfree86 font server included with RedHat 5.1 is vulnerable to a /tmp symbolic link attack. Xfs creates a file in /tmp called .font-unix that will be followed if a symlink. Any file pointed to by the symbolic link will be overwritten.

Exploit / POC

Multiple Vendor xfs Symlink Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Multiple Vendor xfs Symlink Vulnerability

Solution:
Upgrade to XFree86 3.3.3.1-0.1. The other related XFree86 symbolic link vulnerabilities are fixed in this version as well.

References

Multiple Vendor xfs Symlink Vulnerability

References:

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