CVE-2018-14638 Denial of service in 389-ds-base
Remote attackers can crash the 389-ds-base server by terminating persistent search connections, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-14638?
CVE-2018-14638 is a high-severity denial of service vulnerability in Redhat Enterprise Linux Aus, published on 14 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in 389-ds-base before version 1.3.8.4-13. The process ns-slapd crashes in delete_passwdPolicy function when persistent search connections are terminated unexpectedly leading to remote denial of service.
Which versions are affected by CVE-2018-14638?
It affects 7 products.
Products include Fedoraproject 389 Directory Server, Redhat Enterprise Linux Aus, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus and 1 more.
How do I fix CVE-2018-14638?
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-2018-14638 being exploited?
There is no known exploitation of CVE-2018-14638 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux Aus
Sources
Also known as DEBIAN-CVE-2018-14638, GHSA-89rw-hgr3-hvfx, UBUNTU-CVE-2018-14638.