WebFS Long Pathname Buffer Overrun Vulnerability

BID:8726

Info

WebFS Long Pathname Buffer Overrun Vulnerability

Bugtraq ID: 8726
Class: Boundary Condition Error
CVE: CVE-2003-0833
Remote: Yes
Local: No
Published: Sep 29 2003 12:00AM
Updated: Jul 11 2009 11:56PM
Credit: The discovery of this vulnerability has been credited to Jens Steube.
Vulnerable: WebFS WebFS 1.21
WebFS WebFS 1.20
WebFS WebFS 1.19
WebFS WebFS 1.18
WebFS WebFS 1.17
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
Not Vulnerable:

Discussion

WebFS Long Pathname Buffer Overrun Vulnerability

It has been discovered that WebFS is prone to a buffer overrun vulnerability when handling path names of excessive length. As a result, an attacker may be capable of triggering the condition and overwriting sensitive memory with malicious data. This could ultimately allow for the execution of arbitrary code with the privileges of the WebFS HTTP server.

It should be noted that for this condition to occur, an attacker must have the ability to create directories on the affected system.

Exploit / POC

WebFS Long Pathname Buffer Overrun Vulnerability

Exploit contributed by yan feng.

Solution / Fix

WebFS Long Pathname Buffer Overrun Vulnerability

Solution:
Debian has released a security advisory (DSA-392-1) and fixes which address this and other issues in WebFS. Users are advised to upgrade their installations as soon as possible.


WebFS WebFS 1.17

References

WebFS Long Pathname Buffer Overrun Vulnerability

References:

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