CVE-2021-43521 Memory corruption in n/a
A buffer overflow in the zlog library allows attackers to execute arbitrary code or cause a denial of service via crafted configuration files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-43521?
CVE-2021-43521 is a high-severity memory corruption vulnerability in n/a, published on 8 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Buffer Overflow vulnerability exists in zlog 1.2.15 via zlog_conf_build_with_file in src/zlog/src/conf.c.
Weakness: CWE-787
Which versions are affected by CVE-2021-43521?
It affects 1 product.
Products include Zlog Project Zlog.
How do I fix CVE-2021-43521?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-43521 being exploited?
There is no known exploitation of CVE-2021-43521 in the wild and no public exploit code.
Sources
Also known as GHSA-xhvg-qmw2-rr5r, OESA-2022-1652.