From: Sergey <seriv@parkheights.dyndns.org> To: sisyphus@lists.altlinux.org Cc: sysadmins@lists.altlinux.org Subject: [sisyphus] [Fwd: [Dovecot] Security hole #3: zlib plugin allows opening any gziped mboxes] Date: Fri, 30 Mar 2007 11:41:13 -0400 Message-ID: <460D2F99.2000009@parkheights.dyndns.org> (raw) Привет! В devel:/incoming/Sisyphus направлен dovecot-1.0-alt8.rc29 с исправлениями проблемы с безопасностью в zlib plugin'е. Всем кто пользуется этим плагином, рекомендуется обновляться. --- Сергей Иванов -------- Original Message -------- Subject: [Dovecot] Security hole #3: zlib plugin allows opening any gziped mboxes Date: Fri, 30 Mar 2007 17:46:29 +0300 From: Timo Sirainen <tss@iki.fi> Reply-To: Dovecot Mailing List <dovecot@dovecot.org> To: dovecot-news@dovecot.org CC: dovecot@dovecot.org zlib plugin allows opening gzipped mboxes as read-only mailboxes. However when using it, the mailbox name checks are bypassed so it's possible to open for example "../otheruser/somefile.gz". Only valid gzipped mbox files can be opened, and only if their name ends with ".gz". You can fix this by upgrading to v1.0.rc29 (available soon) or with this patch: http://dovecot.org/list/dovecot-cvs/2007-March/008488.html I don't think this matters much though. zlib plugin is rarely used, and those who do use it are probably using Dovecot with systems users (per-user UIDs), so the imap process wouldn't have access to other users' mbox files anyway. I found this problem when I was cleaning up the code in CVS HEAD.
reply other threads:[~2007-03-30 15:41 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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