CVE-2023-31973 Use after free in n/a
A use-after-free flaw in YASM allows attackers to potentially execute arbitrary code or cause 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-2023-31973?
CVE-2023-31973 is a high-severity use after free vulnerability in n/a, published on 9 May 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
yasm v1.3.0 was discovered to contain a use after free via the function expand_mmac_params at /nasm/nasm-pp.c. Note: Multiple third parties dispute this as a bug and not a vulnerability according to the YASM security policy.
Which versions are affected by CVE-2023-31973?
It affects 1 product.
Products include Tortall Yasm.
How do I fix CVE-2023-31973?
No fix has been published for CVE-2023-31973 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-2023-31973 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31973 exists.
Other vulnerabilities in n/a
Sources
Also known as AZL-26634, AZL-35381, DEBIAN-CVE-2023-31973, GHSA-wj4m-72r4-qcmm.