[security-alerts] FW: [SA18921] MDaemon IMAP Mail Folder Name Denial of Service

["Kazennov, Vladimir" <Vladimir.Kazennov@xxxxxxxxxx>]

> 
> 
> TITLE:
> MDaemon IMAP Mail Folder Name Denial of Service
> 
> SECUNIA ADVISORY ID:
> SA18921
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/18921/
> 
> CRITICAL:
> Less critical
> 
> IMPACT:
> DoS
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> MDaemon 8.x
> http://secunia.com/product/5407/
> 
> DESCRIPTION:
> Nemesis Security Audit Group has discovered a vulnerability in
> MDaemon, which potentially can be exploited by malicious users to
> cause a DoS (Denial of Service).
> 
> The vulnerability is caused due to an error in the handling of IMAP
> mail folder names containing format string specifiers. This can be
> exploited to cause the service to consume large amount of CPU
> resources by first creating email folders with format string
> specifiers in their names and then listing them.
> 
> The vulnerability has been confirmed in version 8.1.4 and also
> reported in version 8.1.1. Other versions may also be affected.
> 
> SOLUTION:
> Restrict access to trusted users only.
> 
> PROVIDED AND/OR DISCOVERED BY:
> Nemesis Security Audit Group
> 
> ORIGINAL ADVISORY:
> http://www.nsag.ru/vuln/888.html
>