Not a security hole. A user can crash his/her own session. As bad as issuing a 
LOGOUT command. Completely pointless CVE.

On 4.12.2012, at 17.04, Moritz Muehlenhoff wrote:

> Package: dovecot
> Severity: grave
> Tags: security
> Justification: user security hole
> 
> This entry from 
> http://www.dovecot.org/list/dovecot-news/2012-November/000235.html
> was assigned CVE-2012-5620:
> 
>> imap: Fixed crash when SEARCH contained multiple KEYWORD parameters.
> 
> Fix:
> http://hg.dovecot.org/dovecot-2.1/rev/0306792cc843
> 
> The posting on oss-security claims 1.2 doesn't contain the affected code:
> http://seclists.org/oss-sec/2012/q4/395
> 
> However, mail_search_keywords_merge() also exists in 1.2.15 from Squeeze, so
> this needs further investigation or clarification from upstream.
> 
> Cheers,
>        Moritz
> 


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