Bug 1401024 (CVE-2016-8652) - CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated
Summary: CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-8652
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1401025
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-12-02 15:10 UTC by Andrej Nemec
Modified: 2019-09-29 14:01 UTC (History)
3 users (show)

Fixed In Version: dovecot 2.2.27
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Clone Of:
Environment:
Last Closed: 2019-06-08 03:03:00 UTC
Embargoed:

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Description Andrej Nemec 2016-12-02 15:10:41 UTC 
If auth-policy component has been activated in Dovecot, then remote user
can use SASL authentication to crash auth component.

Workaround is to disable auth-policy component until fix is in place.
This can be done by commenting out all auth_policy_* settings.

References:

http://seclists.org/oss-sec/2016/q4/564
http://dovecot.org/list/dovecot-news/2016-November/000332.html

Upstream patches:

https://github.com/dovecot/core/commit/1f2c35da2b96905bec6e45f88af0f33ee63789e6
https://github.com/dovecot/core/commit/2c3f37672277b1f73f84722802aaa0ab1ab3e413
Comment 1 Andrej Nemec 2016-12-02 15:11:10 UTC 
Created dovecot tracking bugs for this issue:

Affects: fedora-all [bug 1401025]
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