CVE-2018-18956 Denial of service in n/a
Remote attackers can crash the Suricata daemon via crafted SMTP input, 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-2018-18956?
CVE-2018-18956 is a high-severity denial of service vulnerability in n/a, published on 5 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.
Weakness: CWE-119
Which versions are affected by CVE-2018-18956?
It affects 1 product.
Products include Suricata-Ids Suricata.
How do I fix CVE-2018-18956?
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-2018-18956 being exploited?
There is no known exploitation of CVE-2018-18956 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2018-18956, GHSA-mhv4-xgrg-gg58, UBUNTU-CVE-2018-18956.