CVE-2021-46142 Use after free in n/a
Attackers can trigger invalid free operations in uriparser, potentially leading to code execution or denial of service.
- 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-2021-46142?
CVE-2021-46142 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 6 Jan 2022. 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
An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriNormalizeSyntax.
Weakness: CWE-416
Which versions are affected by CVE-2021-46142?
It affects 7 products.
Products include Debian Debian Linux, Fedoraproject Extra Packages for Enterprise Linux, Fedoraproject Fedora, Opensuse Backports, Opensuse Factory, Opensuse Leap and 1 more.
How do I fix CVE-2021-46142?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-46142 being exploited?
There is no known exploitation of CVE-2021-46142 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-46142, GHSA-5jh9-cx9r-v7ww, UBUNTU-CVE-2021-46142.