CVE-2018-5744 A specially crafted packet can cause named to leak memory
A remote attacker can cause the BIND DNS server to leak memory and crash by sending specially crafted packets with specific EDNS options.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-5744?
CVE-2018-5744 is a high-severity denial of service vulnerability in Isc Bind, published on 9 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.
Weakness: CWE-772
Which versions are affected by CVE-2018-5744?
It affects 1 product.
Products include Isc Bind.
How do I fix CVE-2018-5744?
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-2018-5744 being exploited?
There is no known exploitation of CVE-2018-5744 in the wild and no public exploit code.
Other vulnerabilities in Isc Bind
Sources
Also known as ALPINE-CVE-2018-5744, DEBIAN-CVE-2018-5744, GHSA-xcc7-r4h9-f7ph, UBUNTU-CVE-2018-5744.