Debian Security Advisory

DSA-081-1 w3m -- Buffer Overflow

Date Reported:
18 Oct 2001
Affected Packages:
w3m, w3m-ssl
Security database references:
In the Bugtraq database (at SecurityFocus): BugTraq ID 2895.
In Mitre's CVE dictionary: CVE-2001-0700.
More information:

In SNS Advisory No. 32 a buffer overflow vulnerability has been reported in the routine which parses MIME headers that are returned from web servers. A malicious web server administrator could exploit this and let the client web browser execute arbitrary code.

w3m handles MIME headers included in the request/response message of HTTP communication like any other web browser. A buffer overflow will occur when w3m receives a MIME encoded header with base64 format.

This problem has been fixed by the maintainer in version 0.1.10+0.1.11pre+kokb23-4 of w3m and w3m-ssl (for the SSL-enabled version), both for Debian GNU/Linux 2.2.

We recommend that you upgrade your w3m packages immediately.

Fixed in:

Debian GNU/Linux 2.2 (potato)

Intel ia32:
Sun Sparc:

MD5 checksums of the listed files are available in the original advisory.
MD5 checksums of the listed files are available in the revised advisory.