[SA17511] Mailman Attachment Filename Scrubbing Denial of Service

Type securityvulns
Reporter Securityvulns
Modified 2005-11-14T00:00:00


TITLE: Mailman Attachment Filename Scrubbing Denial of Service


VERIFY ADVISORY: http://secunia.com/advisories/17511/

CRITICAL: Moderately critical


WHERE: >From remote

SOFTWARE: Mailman 2.x http://secunia.com/product/1010/

DESCRIPTION: Aliet Santiesteban Sifontes has reported a vulnerability in Mailman, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to "Scrubber.py" failing to handle the exception condition when Python fails to process an email file attachment that contains utf8 characters in its filename. This can potentially be exploited to cause the mailing list to stop working via a specially crafted email.

The vulnerability has been reported in version 2.1.5. Other versions may also be affected.

SOLUTION: Allow only trusted users to post to the list.

PROVIDED AND/OR DISCOVERED BY: Aliet Santiesteban Sifontes

ORIGINAL ADVISORY: Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=327732

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