oss-sec mailing list archives
Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability
From: Jan Lieskovsky <jlieskov () redhat com>
Date: Wed, 22 May 2013 08:17:40 -0400 (EDT)
Thank you for the report, Agostino. Cc-ing Timo to clarify on the point below yet. ----- Original Message -----
From: "Agostino Sarubbo" <ago () gentoo org> To: oss-security () lists openwall com Sent: Tuesday, May 21, 2013 8:58:04 PM Subject: [oss-security] CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability From the secunia advisory SA53492[1] : Description A vulnerability has been reported in Dovecot, which can be exploited by malicious users to cause a DoS (Denial of Service). The vulnerability is caused due to an error within IMAP functionality when processing the "APPEND" parameters and can be exploited to cause a hang.
Timo, in relation with the previous (similar) one (thanks to Tomas Hoger for pointing out): [1] http://thread.gmane.org/gmane.comp.security.oss.general/8916/focus=8934 [2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=695138#15 this time the CVE identifier should be allocated / issue is valid, right? While in the former [1], [2] case just the connection for the user issuing the command would crash, this time (assuming) either whole dovecot daemon might hang or even if the whole daemon wouldn't hang (and request is handled within a thread), that request would made the particular thread to consume excessive amount of CPU due to infinite loop, right? Timo, can you confirm / disprove a CVE identifier should be assigned to this? Thank you && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
The vulnerability is reported in version 2.2. Solution Update to version 2.2.2. Provided and/or discovered by Reported by the vendor. Original Advisory http://www.dovecot.org/list/dovecot-news/2013-May/000255.html Commit: http://hg.dovecot.org/dovecot-2.2/rev/ea0390e1789f [1]: https://secunia.com/advisories/53492/ -- Agostino Sarubbo Gentoo Linux Developer
Current thread:
- CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Agostino Sarubbo (May 21)
- Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Huzaifa Sidhpurwala (May 22)
- Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Jan Lieskovsky (May 22)
- Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Timo Sirainen (May 22)
- Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Kurt Seifried (May 24)
- Re: CVE request: dovecot : "APPEND" Parameters Processing Denial of Service Vulnerability Timo Sirainen (May 22)