CVE-2021-20285 Memory corruption in upx
Attackers can cause a denial of service via a crafted ELF file processed by the UPX executable packer.
- 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-2021-20285?
CVE-2021-20285 is a medium-severity memory corruption vulnerability in upx, published on 26 Mar 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 upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.
Which versions are affected by CVE-2021-20285?
It affects 1 product.
Products include Upx Upx.
How do I fix CVE-2021-20285?
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-2021-20285 being exploited?
There is no known exploitation of CVE-2021-20285 in the wild and no public exploit code.
Other vulnerabilities in upx
Sources
Also known as DEBIAN-CVE-2021-20285, GHSA-9235-qgm5-877x, UBUNTU-CVE-2021-20285.