Date: Fri, 20 Nov 2009 12:41:07 +0100 From: Thomas Biege <thomas@...e.de> To: OSS-Security Mailinglist <oss-security@...ts.openwall.com> Subject: CVE request: v1.2.8 released to fix the 0777 base_dir creation issue Hello. http://www.dovecot.org/list/dovecot-news/2009-November/000143.html http://dovecot.org/releases/1.2/dovecot-1.2.8.tar.gz http://dovecot.org/releases/1.2/dovecot-1.2.8.tar.gz.sig This is mainly to fix the 0777 base_dir creation issue, which could be considered a security hole, exploitable by local users. An attacker could for example replace Dovecot's auth socket and log in as other users. Gaining root privileges isn't possible though. This affects only v1.2 users, v1.1 and older versions were creating the directory with 0755 permission. If your Dovecot's base_dir isn't in /var/run/dovecot/, you should also make sure that the $prefix/var/ and $prefix/var/run/ (i.e. /usr/local/var/, /usr/local/var/run/ by default) aren't 0777. * Dovecot v1.2.x had been creating base_dir (and its parents if necessary) with 0777 permissions. The base_dir's permissions get changed to 0755 automatically at startup, but you may need to chmod the parent directories manually. - acl: If user has rights from more than one group, merge them instead of choosing one group's rights and ignoring others. - virtual: When using a lot of mailboxes, the virtual mailbox's header could have grown over 32 kB and caused "out of memory" crashes. Also over 64 kB headers couldn't even be updated with existing transaction log records. Added a new record type that gets used with >=64 kB headers. Older Dovecot versions don't understand this header and will log errors if they see it. - FETCH BODYSTRUCTURE didn't return RFC 2231 "key*" fields correctly -- Bye, Thomas -- Thomas Biege <thomas@...e.de>, SUSE LINUX, Security Support & Auditing SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nuernberg) -- Wer aufhoert besser werden zu wollen, hoert auf gut zu sein. -- Marie von Ebner-Eschenbach
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.