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Category:   Application (E-mail Server)  >   Cyrus IMAP Server Vendors:   Carnegie Mellon University
Cyrus IMAP Server Null Pointer Dereference in index_get_ids() Lets Remote Users Deny Service
SecurityTracker Alert ID:  1026362
SecurityTracker URL:  http://securitytracker.com/id/1026362
CVE Reference:   CVE-2011-3481   (Links to External Site)
Date:  Dec 1 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 2.4.11
Description:   A vulnerability was reported in Cyrus IMAP Server. A remote user can cause denial of service conditions.

A remote user can send a mail message with a specially crafted References header to trigger a null pointer dereference in the index_get_ids() function in 'index.c' and cause the target service to crash.

Systems with server-side threading enabled are affected.

Oyvind Kolbu reported this vulnerability.

Impact:   A remote user can cause the target service to crash.
Solution:   The vendor has issued a fix (2.4.11). A source code fix is also available at:

http://git.cyrusimap.org/cyrus-imapd/commit/?id=6e776956a1a9dfa58eacdd0ddd52644009eac9e5

Vendor URL:  www.cyrusimap.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Dec 1 2011 (Red Hat Issues Fix) Cyrus IMAP Server Null Pointer Dereference in index_get_ids() Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 4, 5, and 6.



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