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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dovecot | 1:2.2.27-1 | — |
| Debian 13 | dovecot | 1:2.2.27-1 | — |
| Debian 12 | dovecot | 1:2.2.27-1 | — |
References
- 94639 vdb-entry
- [oss-security] 20161202 Important vulnerability in Dovecot (CVE-2016-8652) mailing-list
- [dovecot-news] 20161203 v2.2.27 released mailing-list
- [oss-security] 20161205 Re: Important vulnerability in Dovecot (CVE-2016-8652) mailing-list