CVE-2020-19725 Use after free in n/a
A use-after-free in the Z3 theorem prover allows attackers to cause crashes or execute arbitrary code via crafted constraints.
- 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-2020-19725?
CVE-2020-19725 is a high-severity use after free vulnerability in n/a, published on 22 Aug 2023. 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
There is a use-after-free vulnerability in file pdd_simplifier.cpp in Z3 before 4.8.8. It occurs when the solver attempt to simplify the constraints and causes unexpected memory access. It can cause segmentation faults or arbitrary code execution.
Weakness: CWE-416
Which versions are affected by CVE-2020-19725?
It affects 1 product.
Products include Microsoft Z3.
How do I fix CVE-2020-19725?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-19725 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-19725 exists.
Sources
Also known as AZL-27991, AZL-37067, GHSA-whrm-xv93-8gvj, UBUNTU-CVE-2020-19725.