What’s Vulnerable › Vulnerabilities

CVE-2020-35857

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-31 · updated 2026-06-17
• Weakness: CWE-400

Description

An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. DNS MX and SRV null targets are mishandled, causing stack consumption.

Affected products

• Trust-Dns-Server Project Trust-Dns-Server: from 0.16.0 before 0.18.1 — fixed in 0.18.1

How to fix

Upgrade to a fixed version: Trust-Dns-Server Project Trust-Dns-Server 0.18.1. Check the vendor advisory for mitigations.

References

• https://github.com/bluejekyll/trust-dns/commit/8b9eab05795fdc098976262853b2498055c7a8f3
• https://rustsec.org/advisories/RUSTSEC-2020-0001.html
• https://github.com/bluejekyll/trust-dns/commit/8b9eab05795fdc098976262853b2498055c7a8f3
• https://rustsec.org/advisories/RUSTSEC-2020-0001.html

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