CVE-2020-14315 Memory corruption in bsdiff
An attacker can exploit insufficient input checks in bspatch to write outside buffer boundaries, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-14315?
CVE-2020-14315 is a critical memory corruption vulnerability in bsdiff, published on 16 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.
Weakness: CWE-787
Which versions are affected by CVE-2020-14315?
It affects 1 product.
Products include Daemonology Bsdiff.
How do I fix CVE-2020-14315?
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-2020-14315 being exploited?
There is no known exploitation of CVE-2020-14315 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2020-14315, GHSA-g2hg-j8m2-ppxr, UBUNTU-CVE-2020-14315.