W3M Malformed MIME Header Buffer Overflow Vulnerability

BID:2895

Info

W3M Malformed MIME Header Buffer Overflow Vulnerability

Bugtraq ID: 2895
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: Jun 19 2001 12:00AM
Updated: Jun 19 2001 12:00AM
Credit: Published in an SNS Advisory on June 19, 2001.
Vulnerable: W3M W3M 0.2.1
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.2
W3M W3M 0.2
+ Redhat Linux 7.0 i386
 + Redhat Linux 7.0
W3M W3M 0.1.10
W3M W3M 0.1.9
W3M W3M 0.1.8
W3M W3M 0.1.7
W3M W3M 0.1.6
W3M W3M 0.1.4
W3M W3M 0.1.3
Not Vulnerable:

Discussion

W3M Malformed MIME Header Buffer Overflow Vulnerability

W3M is a pager/text-based WWW browser similiar to lynx.

A buffer overflow vulnerability exists in the 'w3m' client program. The overflow occurs when a base64-encoded string exceeding approximately 32 characters in length is received in a MIME header field. As a result, it may be possible for a malicious remote server to execute arbitrary code on a user's system.

Solution / Fix

W3M Malformed MIME Header Buffer Overflow Vulnerability

Solution:
Source code patches that rectify this issue were posted to the w3m developers' mailing list. Links to the archive of these posts can be found in the references section.


W3M W3M 0.1.10

W3M W3M 0.1.9

W3M W3M 0.2.1

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