CVE-2020-35861 Out of bounds read in bumpalo
Attackers can read unknown memory, potentially exposing cryptographic keys, via the realloc feature in the bumpalo Rust library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-35861?
CVE-2020-35861 is a high-severity vulnerability in n/a, published on 31 Dec 2020. 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 bumpalo crate before 3.2.1 for Rust. The realloc feature allows the reading of unknown memory. Attackers can potentially read cryptographic keys.
Weakness: CWE-125
Which versions are affected by CVE-2020-35861?
3 open source packages ship an affected version, including bumpalo. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
bumpalo crates.io | From 3.0.0 | 3.2.1 |
bumpalo crates.io | From 3.0.0 | 3.2.1 |
bumpalo crates.io | From 3.0.0 | 3.2.1 |
Products include Bumpalo Project Bumpalo.
How do I fix CVE-2020-35861?
Upgrade bumpalo to 3.2.1 or later.
Is CVE-2020-35861 being exploited?
There is no known exploitation of CVE-2020-35861 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2020-35861, GHSA-vqx7-pw4r-29rr, RUSTSEC-2020-0006, UBUNTU-CVE-2020-35861.