CVE-2020-35448 Memory corruption in n/a
A heap-based buffer over-read in the BFD library allows attackers to cause denial of service or disclose sensitive information 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-2020-35448?
CVE-2020-35448 is a low-severity memory corruption vulnerability in Gnu Binutils, published on 27 Dec 2020. 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 issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.
Weakness: CWE-125
Which versions are affected by CVE-2020-35448?
It affects 2 products.
Products include Gnu Binutils, Netapp Ontap Select Deploy Administration Utility.
How do I fix CVE-2020-35448?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-35448 being exploited?
There is no known exploitation of CVE-2020-35448 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as DEBIAN-CVE-2020-35448, GHSA-r2cj-jqqc-j833.