CVE-2018-20538 Use after free in n/a
A use-after-free flaw in Netwide Assembler allows attackers to cause a denial of service via crafted input during preprocessing.
- 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
- None listed
What is CVE-2018-20538?
CVE-2018-20538 is a medium-severity use after free vulnerability in Nasm Netwide Assembler, published on 28 Dec 2018. 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
There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service during certain finishes tests.
Weakness: CWE-416
Which versions are affected by CVE-2018-20538?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2018-20538?
No fix has been published for CVE-2018-20538 yet. Limit exposure of the affected software until one is available.
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-2018-20538 being exploited?
There is no known exploitation of CVE-2018-20538 in the wild and no public exploit code.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as DEBIAN-CVE-2018-20538, GHSA-vvh8-8r3j-wmjw, UBUNTU-CVE-2018-20538.