CVE-2021-20284 Memory corruption in binutils
A heap-based buffer overflow in GNU Binutils allows attackers to cause a denial of service via crafted ELF 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-2021-20284?
CVE-2021-20284 is a medium-severity memory corruption vulnerability in Gnu Binutils, 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 GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.
Which versions are affected by CVE-2021-20284?
It affects 3 products.
Products include Gnu Binutils, Netapp Cloud Backup, Netapp Ontap Select Deploy Administration Utility.
How do I fix CVE-2021-20284?
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-2021-20284 being exploited?
There is no known exploitation of CVE-2021-20284 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as DEBIAN-CVE-2021-20284, GHSA-hm3m-qrrw-pfv7.