CVE-2023-42444 phonenumber panics on parsing crafted RF3966 inputs
Attackers can cause a denial of service in applications using the phonenumber library by sending crafted inputs that trigger a panic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-42444?
CVE-2023-42444 is a high-severity denial of service vulnerability in whisperfish rust-phonenumber, published on 19 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions `0.3.3+8.13.9` and `0.2.5+8.11.3`, the phonenumber parsing code may panic due to a panic-guarded out-of-bounds access on the phonenumber string. In a typical deployment of `rust-phonenumber`, this may get triggered by feeding a maliciously crafted phonenumber over the network, specifically the string `.;phone-context=`. Versions `0.3.3+8.13.9` and `0.2.5+8.11.3` contain a patch for this issue. There are no known workarounds.
Which versions are affected by CVE-2023-42444?
5 open source packages ship an affected version, including phonenumber. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
phonenumber crates.io | All versions | 0.2.5 |
phonenumber crates.io | All versions | 0.2.5 |
phonenumber crates.io | From 0.0.0-0 | 0.2.5, 0.3.3 |
phonenumber crates.io | From 0.3.0 | 0.3.3 |
phonenumber crates.io | From 0.3.0 | 0.3.3 |
Products include Whisperfish Phonenumber.
How do I fix CVE-2023-42444?
Upgrade phonenumber to a fixed version for your release line: 0.2.5 or 0.3.3.
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-2023-42444 being exploited?
There is no known exploitation of CVE-2023-42444 in the wild and no public exploit code.
Sources
Also known as GHSA-whhr-7f2w-qqj2, RUSTSEC-2023-0082.