CVE-2020-35493 Memory corruption in binutils
An attacker can cause a denial of service in binutils objdump by providing a crafted PEF file that triggers a heap buffer overflow.
- 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-2020-35493?
CVE-2020-35493 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 4 Jan 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 exists in binutils in bfd/pef.c. An attacker who is able to submit a crafted PEF file to be parsed by objdump could cause a heap buffer overflow -> out-of-bounds read that could lead to an impact to application availability. This flaw affects binutils versions prior to 2.34.
Weakness: CWE-20
Which versions are affected by CVE-2020-35493?
It affects 8 products.
Products include Broadcom Brocade Fabric Operating System Firmware, Fedoraproject Fedora, Gnu Binutils, Netapp Cloud Backup, Netapp Hci Compute Node Firmware, Netapp Ontap Select Deploy Administration Utility and 2 more.
How do I fix CVE-2020-35493?
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-2020-35493 being exploited?
There is no known exploitation of CVE-2020-35493 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2020-35493, GHSA-w5g7-j55x-m535.