CVE-2019-12972 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 memory contents 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-2019-12972?
CVE-2019-12972 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 26 Jun 2019. 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 2.32. There is a heap-based buffer over-read in _bfd_doprnt in bfd.c because elf_object_p in elfcode.h mishandles an e_shstrndx section of type SHT_GROUP by omitting a trailing '\0' character.
Weakness: CWE-125
Which versions are affected by CVE-2019-12972?
It affects 3 products.
Products include Canonical Ubuntu Linux, Gnu Binutils, Opensuse Leap.
How do I fix CVE-2019-12972?
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-2019-12972 being exploited?
There is no known exploitation of CVE-2019-12972 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-12972, GHSA-8q59-68wh-w68x, UBUNTU-CVE-2019-12972.