Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1maDJyLTk5cTItNm1tZ84AA1as

rustls-webpki: CPU denial of service in certificate path building

When this crate is given a pathological certificate chain to validate, it will spend CPU time exponential with the number of candidate certificates at each step of path building.

Both TLS clients and TLS servers that accept client certificate are affected.

We now give each path building operation a budget of 100 signature verifications.

The original webpki crate is also affected, see GHSA-8qv2-5vq6-g2g7.

This was previously reported in the original crate https://github.com/briansmith/webpki/issues/69 and re-reported to us recently.

Permalink: https://github.com/advisories/GHSA-fh2r-99q2-6mmg
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1maDJyLTk5cTItNm1tZ84AA1as
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 9 months ago
Updated: 8 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-fh2r-99q2-6mmg
References:

• https://github.com/rustls/webpki/commit/4ea052366f342a06344aab589565179b59b342d3
• https://github.com/rustls/webpki/commit/dcad2406c92169b72c110dd12183fcc74035b683
• https://rustsec.org/advisories/RUSTSEC-2023-0053.html
• https://github.com/advisories/GHSA-8qv2-5vq6-g2g7
• https://github.com/advisories/GHSA-fh2r-99q2-6mmg

Repository: https://github.com/rustls/webpki
Blast Radius: 27.5

Affected Packages