CVE-2020-36464 Use after free in heapless
A use-after-free vulnerability in the heapless crate allows attackers to cause memory corruption or crashes via improper cloning of partially consumed iterators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36464?
CVE-2020-36464 is a high-severity use after free vulnerability in n/a, published on 8 Aug 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 heapless crate before 0.6.1 for Rust. The IntoIter Clone implementation clones an entire underlying Vec without considering whether it has already been partially consumed.
Weakness: CWE-416
Which versions are affected by CVE-2020-36464?
3 open source packages ship an affected version, including heapless. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
heapless crates.io | All versions | 0.6.1 |
heapless crates.io | All versions | 0.6.1 |
heapless crates.io | From 0.0.0-0 | 0.6.1 |
Products include Heapless Project Heapless.
How do I fix CVE-2020-36464?
Upgrade heapless to 0.6.1 or later.
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-2020-36464 being exploited?
There is no known exploitation of CVE-2020-36464 in the wild and no public exploit code.
Sources
Also known as GHSA-qgwf-r2jj-2ccv, RUSTSEC-2020-0145.