CVE-2016-8652
published 2017-02-17CVE-2016-8652: The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting…
PriorityP340medium5.9CVSS 3.0
AVNACHPRNUINSUCNINAH
EPSS
48.20%
98.7th percentile
The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | dovecot | < dovecot 1:2.2.27-1 (bookworm) | dovecot 1:2.2.27-1 (bookworm) |
| dovecot | dovecot | <= 2.2.27 | — |
| dovecot | dovecot | >= 0 < 1:2.2.27-1 | 1:2.2.27-1 |
| dovecot | dovecot | >= 0 < 1:2.2.27-1 | 1:2.2.27-1 |
| dovecot | dovecot | >= 0 < 1:2.2.27-1 | 1:2.2.27-1 |
| dovecot | dovecot | >= 0 < 1:2.2.27-1 | 1:2.2.27-1 |
CVSS provenance
nvdv3.05.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_debian5.9MEDIUM
vendor_redhat5.9MEDIUM
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Red Hat
dovecot: Remote crash when auth-policy component is activated
vendor_redhat·2016-11-29·CVSS 5.9
CVE-2016-8652 [MEDIUM] dovecot: Remote crash when auth-policy component is activated
dovecot: Remote crash when auth-policy component is activated
The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
Package: dovecot (Red Hat Enterprise Linux 5) - Not affected
Package: dovecot (Red Hat Enterprise Linux 6) - Not affected
Package: dovecot (Red Hat Enterprise Linux 7) - Not affected
Debian
CVE-2016-8652: dovecot - The auth component in Dovecot before 2.2.27, when auth-policy is configured, all...
vendor_debian·2016·CVSS 5.9
CVE-2016-8652 [MEDIUM] CVE-2016-8652: dovecot - The auth component in Dovecot before 2.2.27, when auth-policy is configured, all...
The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
Scope: local
bookworm: resolved (fixed in 1:2.2.27-1)
bullseye: resolved (fixed in 1:2.2.27-1)
forky: resolved (fixed in 1:2.2.27-1)
sid: resolved (fixed in 1:2.2.27-1)
trixie: resolved (fixed in 1:2.2.27-1)
GHSA
GHSA-vm4w-qxvr-6wfp: The auth component in Dovecot before 2
ghsa_unreviewed·2022-05-17
CVE-2016-8652 [MEDIUM] CWE-20 GHSA-vm4w-qxvr-6wfp: The auth component in Dovecot before 2
The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
OSV
CVE-2016-8652: The auth component in Dovecot before 2
osv·2017-02-17·CVSS 5.9
CVE-2016-8652 [MEDIUM] CVE-2016-8652: The auth component in Dovecot before 2
The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated [fedora-all]
bugzilla·2016-12-02·CVSS 5.9
CVE-2016-8652 [MEDIUM] CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated [fedora-all]
CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported v
Bugzilla
CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated
bugzilla·2016-12-02·CVSS 5.9
CVE-2016-8652 [MEDIUM] CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated
CVE-2016-8652 dovecot: Remote crash when auth-policy component is activated
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
Discussion:
Created dovecot tracking bugs for this issue:
Affects: fedora-all [bug 1401025]
http://dovecot.org/pipermail/dovecot-news/2016-December/000333.htmlhttp://www.openwall.com/lists/oss-security/2016/12/02/4http://www.openwall.com/lists/oss-security/2016/12/05/12http://www.securityfocus.com/bid/94639http://dovecot.org/pipermail/dovecot-news/2016-December/000333.htmlhttp://www.openwall.com/lists/oss-security/2016/12/02/4http://www.openwall.com/lists/oss-security/2016/12/05/12http://www.securityfocus.com/bid/94639
2017-02-17
Published