CVE-2016-8652
medium
CVSS v3
5.9
CVSS v4 NEW
—
VIR risk
5.9
Description
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.
Predictions
Exploit likelihood
69%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| arch | fixed | 2.2.27-1 | |
| debian | bookworm | fixed | 1:2.2.27-1 |
| debian | bullseye | fixed | 1:2.2.27-1 |
| debian | forky | fixed | 1:2.2.27-1 |
| debian | sid | fixed | 1:2.2.27-1 |
| debian | trixie | fixed | 1:2.2.27-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| dovecot | dovecot | {"endIncluding":"2.2.27"} | |
References
- http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html
- http://www.openwall.com/lists/oss-security/2016/12/02/4
- http://www.openwall.com/lists/oss-security/2016/12/05/12
- http://www.securityfocus.com/bid/94639
- https://www.suse.com/security/cve/CVE-2016-8652.html
- https://security-tracker.debian.org/tracker/CVE-2016-8652
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.