CVE-2020-11958 Memory corruption in n/a
A heap-based buffer overflow in re2c allows attackers to execute arbitrary code or cause denial of service via a long lexeme.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-11958?
CVE-2020-11958 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 21 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
Weakness: CWE-787
Which versions are affected by CVE-2020-11958?
It affects 2 products.
Products include Canonical Ubuntu Linux, Re2c Re2c.
How do I fix CVE-2020-11958?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-11958 being exploited?
There is no known exploitation of CVE-2020-11958 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2020-11958, DEBIAN-CVE-2020-11958, GHSA-qvw2-729q-g92x, UBUNTU-CVE-2020-11958, USN-4338-2.