CVE-2020-21528 Denial of service in n/a
Remote attackers can cause a denial of service in the NASM assembler by providing a crafted assembly file that triggers a segmentation fault.
- 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-2020-21528?
CVE-2020-21528 is a medium-severity denial of service 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 Segmentation Fault issue discovered in in ieee_segment function in outieee.c in nasm 2.14.03 and 2.15 allows remote attackers to cause a denial of service via crafted assembly file.
Which versions are affected by CVE-2020-21528?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2020-21528?
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-2020-21528 being exploited?
There is no known exploitation of CVE-2020-21528 in the wild and no public exploit code.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as BELL-CVE-2020-21528, DEBIAN-CVE-2020-21528, GHSA-hfwj-q2m5-23m2, JLSEC-2026-200, OESA-2023-1626, UBUNTU-CVE-2020-21528.