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:	Vulnerabilities	Assignee:	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 (RETIRED) gentoo-dev

2019-08-28 19:08:20 UTC


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