CVE-2016-8652 Denial of service in n/a
Remote attackers can crash the Dovecot auth component by aborting authentication without a username when auth-policy is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-8652?
CVE-2016-8652 is a medium-severity denial of service vulnerability in Dovecot Dovecot, published on 16 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2016-8652?
It affects 1 product.
Products include Dovecot Dovecot.
How do I fix CVE-2016-8652?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-8652 being exploited?
There is no known exploitation of CVE-2016-8652 in the wild and no public exploit code.
Other vulnerabilities in Dovecot Dovecot
Sources
Also known as DEBIAN-CVE-2016-8652, GHSA-vm4w-qxvr-6wfp.