CVE-2019-6291 Denial of service in n/a
Remote attackers can cause denial of service in Netwide Assembler via crafted assembly files triggering stack exhaustion.
- 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-2019-6291?
CVE-2019-6291 is a medium-severity denial of service vulnerability in Nasm Netwide Assembler, published on 15 Jan 2019. 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 the function expr6 in eval.c in Netwide Assembler (NASM) through 2.14.02. There is a stack exhaustion problem caused by the expr6 function making recursive calls to itself in certain scenarios involving lots of '!' or '+' or '-' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted asm file.
Weakness: CWE-674
Which versions are affected by CVE-2019-6291?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2019-6291?
No fix has been published for CVE-2019-6291 yet. Limit exposure of the affected software until one is available.
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-2019-6291 being exploited?
There is no known exploitation of CVE-2019-6291 in the wild and no public exploit code.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as DEBIAN-CVE-2019-6291, GHSA-mjrg-rf9g-9j6r, UBUNTU-CVE-2019-6291.