CVE-2017-16231 Denial of service in n/a
A self-recursive call in PCRE's match function causes a stack overflow crash, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16231?
CVE-2017-16231 is a medium-severity denial of service vulnerability in n/a, published on 17 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the function match() in pcre_exec.c because of a self-recursive call. NOTE: third parties dispute the relevance of this report, noting that there are options that can be used to limit the amount of stack that is used
Weakness: CWE-119
Which versions are affected by CVE-2017-16231?
It affects 1 product.
Products include Pcre Pcre.
How do I fix CVE-2017-16231?
No fix published yet.
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-2017-16231 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-16231 exists.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2017-16231, DEBIAN-CVE-2017-16231, GHSA-5hhr-8qw3-63p2.