CVE-2019-20334 Denial of service in n/a
A stack consumption vulnerability in NASM allows attackers to cause a denial of service via crafted input.
- 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-2019-20334?
CVE-2019-20334 is a medium-severity denial of service vulnerability in Nasm Netwide Assembler, published on 4 Jan 2020. 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
In Netwide Assembler (NASM) 2.14.02, stack consumption occurs in expr# functions in asm/eval.c. This potentially affects the relationships among expr0, expr1, expr2, expr3, expr4, expr5, and expr6 (and stdscan in asm/stdscan.c). This is similar to CVE-2019-6290 and CVE-2019-6291.
Weakness: CWE-674
Which versions are affected by CVE-2019-20334?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2019-20334?
No fix has been published for CVE-2019-20334 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-2019-20334 being exploited?
There is no known exploitation of CVE-2019-20334 in the wild and no public exploit code.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as DEBIAN-CVE-2019-20334, GHSA-753j-4956-2r9q, UBUNTU-CVE-2019-20334.