CVE-2019-20021 Memory corruption in n/a
A heap-based buffer over-read in UPX allows attackers to cause denial of service or potentially execute code via a crafted Mach-O file.
- 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-2019-20021?
CVE-2019-20021 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 27 Dec 2019. 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 heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
Weakness: CWE-125
Which versions are affected by CVE-2019-20021?
It affects 2 products.
Products include Fedoraproject Fedora, Upx Upx.
How do I fix CVE-2019-20021?
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-2019-20021 being exploited?
There is no known exploitation of CVE-2019-20021 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2019-20021, GHSA-97cx-745f-9p9g, UBUNTU-CVE-2019-20021.