CVE-2021-39550 Memory corruption in n/a

High 7.8 Published 20 Sep 2021 Updated 4 Aug 2024

A heap-based buffer overflow in the Sela library allows attackers to execute arbitrary code or cause denial of service via crafted files.

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-2021-39550?

CVE-2021-39550 is a high-severity memory corruption vulnerability in n/a, published on 20 Sep 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 sela through 20200412. file::SelaFile::readFromFile() in sela_file.cpp has a heap-based buffer overflow.

Weakness: CWE-787

Which versions are affected by CVE-2021-39550?

It affects 1 product.

Products include Sela Project Sela.

How do I fix CVE-2021-39550?

No fix has been published for CVE-2021-39550 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-2021-39550 being exploited?

There is no known exploitation of CVE-2021-39550 in the wild and no public exploit code.

Sources

Also known as GHSA-m66j-4hh4-r35x.