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Bug 693020

Summary: net-mail/dovecot: Buffer overflows due to null bytes in imap and managedsieve parser
Product: Gentoo Security Reporter: Hanno Böck <hanno>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: RESOLVED DUPLICATE    
Severity: normal CC: christian, eras
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://www.openwall.com/lists/oss-security/2019/08/28/3
Whiteboard:
Package list:
Runtime testing required: ---

Description Hanno Böck gentoo-dev 2019-08-28 15:52:13 UTC
This sounds it could become very severe if someone publishes an exploit:
https://www.openwall.com/lists/oss-security/2019/08/28/3

Please bump, 2.3.7.2 and 2.2.36.4 contain the fix.
Comment 1 Hanno Böck gentoo-dev 2019-08-28 16:38:36 UTC
Pigeonhole is also affected (gets installed with dovecot with USE="sieve"), fix is in 0.5.7.2:
https://raw.githubusercontent.com/dovecot/pigeonhole/0.5.7.2/NEWS
Comment 2 Hank Leininger 2019-08-28 17:33:28 UTC
FWIW, bumping ebuild to 2.3.7.2 built & running fine here with no other changes.

I do not use sieve so cannot comment on it.
Comment 3 Christian Hoffmann 2019-08-28 18:59:46 UTC
This is CVE-2019-11500 according to the oss-sec report.

Confirming that bumping to dovecot-2.3.7.2 with sieve_version=0.5.7.2 builds and runs on amd64. Sieve-based filtering still works.
Comment 4 Thomas Deutschmann gentoo-dev Security 2019-08-28 19:08:20 UTC

*** This bug has been marked as a duplicate of bug 692572 ***