CVE-2021-3549 Memory corruption in binutils
An out-of-bounds flaw in GNU binutils objdump allows attackers to cause crashes or memory corruption via a large section, impacting availability and integrity.
- 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-2021-3549?
CVE-2021-3549 is a high-severity memory corruption vulnerability in Gnu Binutils, published on 26 May 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 out of bounds flaw was found in GNU binutils objdump utility version 2.36. An attacker could use this flaw and pass a large section to avr_elf32_load_records_from_section() probably resulting in a crash or in some cases memory corruption. The highest threat from this vulnerability is to integrity as well as system availability.
Which versions are affected by CVE-2021-3549?
It affects 1 product.
Products include Gnu Binutils.
How do I fix CVE-2021-3549?
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-2021-3549 being exploited?
There is no known exploitation of CVE-2021-3549 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as DEBIAN-CVE-2021-3549, GHSA-p2w9-g2w7-8fw9, OESA-2021-1242, UBUNTU-CVE-2021-3549.