CVE-2021-32493 Memory corruption in djvulibre
A heap buffer overflow in the djvulibre library allows attackers to cause application crashes or potentially execute code via crafted DjVu 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
- Available
What is CVE-2021-32493?
CVE-2021-32493 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 24 Jun 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
A flaw was found in djvulibre-3.5.28 and earlier. A heap buffer overflow in function DJVU::GBitmap::decode() via crafted djvu file may lead to application crash and other consequences.
Which versions are affected by CVE-2021-32493?
It affects 2 products.
Products include Debian Debian Linux, Djvulibre Project Djvulibre.
How do I fix CVE-2021-32493?
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-2021-32493 being exploited?
There is no known exploitation of CVE-2021-32493 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CLEANSTART-2023-PV22404, DEBIAN-CVE-2021-32493, GHSA-8pcw-jr9p-76hj, UBUNTU-CVE-2021-32493.