CVE-2018-20994

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-08-26 · updated 2026-06-17
Weakness: CWE-674

Description

An issue was discovered in the trust-dns-proto crate before 0.5.0-alpha.3 for Rust. There is infinite recursion because DNS message compression is mishandled.

Affected products

Trust-Dns-Proto Project Trust-Dns-Proto: before 0.4.3; 0.5.0-alpha.1, 0.5.0-alpha.2 — fixed in 0.4.3

How to fix

Upgrade to a fixed version: Trust-Dns-Proto Project Trust-Dns-Proto 0.4.3. Check the vendor advisory for mitigations.

References

https://rustsec.org/advisories/RUSTSEC-2018-0007.html
https://rustsec.org/advisories/RUSTSEC-2018-0007.html

Get alerted when CVE-2018-20994 or the next vulnerability affects your stack