CVE-2020-35909 Unexpected panic in multihash
Attackers can cause a denial of service by sending unsanitized data to applications using the multihash crate, triggering a panic during parsing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-35909?
CVE-2020-35909 is a high-severity denial of service 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 multihash crate before 0.11.3 for Rust. The from_slice parsing code can panic via unsanitized data from a network server.
Which versions are affected by CVE-2020-35909?
3 open source packages ship an affected version, including multihash. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
multihash crates.io | All versions | 0.11.3 |
multihash crates.io | All versions | 0.11.3 |
multihash crates.io | From 0.0.0-0 | 0.11.3 |
Products include Protocol Multihash.
How do I fix CVE-2020-35909?
Upgrade multihash to 0.11.3 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-35909 being exploited?
There is no known exploitation of CVE-2020-35909 in the wild and no public exploit code.
Sources
Also known as GHSA-h7qh-3h6f-w79p, RUSTSEC-2020-0068.