CVE-2020-18780 Use after free in n/a
Attackers can cause a denial of service in the NASM assembler by providing a crafted command that triggers a use-after-free error.
- 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-2020-18780?
CVE-2020-18780 is a medium-severity use after free vulnerability in Nasm Netwide Assembler, published on 22 Aug 2023. 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
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
Weakness: CWE-416
Which versions are affected by CVE-2020-18780?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2020-18780?
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-2020-18780 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18780 exists.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as DEBIAN-CVE-2020-18780, GHSA-32c4-v26c-m9ch, UBUNTU-CVE-2020-18780.