CVE-2017-7300 Memory corruption in n/a
A heap-based buffer over-read in the BFD library allows attackers to cause a denial of service via a crafted binary file processed by the linker.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7300?
CVE-2017-7300 is a high-severity memory corruption vulnerability in Gnu Binutils, published on 29 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.28, has an aout_link_add_symbols function in bfd/aoutx.h that is vulnerable to a heap-based buffer over-read (off-by-one) because of an incomplete check for invalid string offsets while loading symbols, leading to a GNU linker (ld) program crash.
Weakness: CWE-125
Which versions are affected by CVE-2017-7300?
It affects 1 product.
Products include Gnu Binutils.
How do I fix CVE-2017-7300?
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-2017-7300 being exploited?
There is no known exploitation of CVE-2017-7300 in the wild and no public exploit code.
Other vulnerabilities in Gnu Binutils
Sources
Also known as DEBIAN-CVE-2017-7300, GHSA-wmr9-3gx6-q5c2, UBUNTU-CVE-2017-7300.