CVE-2020-35876 Use after free in rio
Attackers can exploit a leaked struct in the rio crate to cause use-after-free, data races, or information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-35876?
CVE-2020-35876 is a critical use after free 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 rio crate through 2020-05-11 for Rust. A struct can be leaked, allowing attackers to obtain sensitive information, cause a use-after-free, or cause a data race.
Which versions are affected by CVE-2020-35876?
3 open source packages ship an affected version, including rio. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
rio crates.io | All versions to 0.9.4 | None |
rio crates.io | All versions to 0.9.4 | None |
rio crates.io | From 0.0.0-0 | None |
Products include Rio Project Rio.
How do I fix CVE-2020-35876?
No fix has been published for CVE-2020-35876 yet. Limit exposure of the affected software until one is available.
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-2020-35876 being exploited?
There is no known exploitation of CVE-2020-35876 in the wild and no public exploit code.
Sources
Also known as GHSA-8rc5-mr4f-m243, RUSTSEC-2020-0021.