CVE-2020-36215 Data races in hashconsing
Attackers can trigger memory corruption in the Rust hashconsing crate due to missing Send/Sync bounds, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36215?
CVE-2020-36215 is a high-severity memory corruption vulnerability in n/a, published on 22 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in the hashconsing crate before 1.1.0 for Rust. Because HConsed does not have bounds on its Send trait or Sync trait, memory corruption can occur.
Which versions are affected by CVE-2020-36215?
3 open source packages ship an affected version, including hashconsing. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
hashconsing crates.io | All versions | 1.1.0 |
hashconsing crates.io | All versions | 1.1.0 |
hashconsing crates.io | From 0.0.0-0 | 1.1.0 |
Products include Hashconsing Project Hashconsing.
How do I fix CVE-2020-36215?
Upgrade hashconsing to 1.1.0 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-36215 being exploited?
There is no known exploitation of CVE-2020-36215 in the wild and no public exploit code.
Sources
Also known as GHSA-rw2c-c256-3r53, RUSTSEC-2020-0107.