CVE-2020-23921 Memory corruption in n/a
A heap-based buffer over-read in the fast_ber library allows attackers to cause denial of service or disclose sensitive memory contents.
- 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-2020-23921?
CVE-2020-23921 is a high-severity memory corruption vulnerability in n/a, published on 21 Apr 2021. 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 fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.
Weakness: CWE-125
Which versions are affected by CVE-2020-23921?
It affects 1 product.
Products include Fast Ber Project Fast Ber.
How do I fix CVE-2020-23921?
No fix has been published for CVE-2020-23921 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-23921 being exploited?
There is no known exploitation of CVE-2020-23921 in the wild and no public exploit code.
Sources
Also known as GHSA-5v8f-79pq-pg2j.