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NLnetLabs / krill

RPKI Certificate Authority and Publication Server written in Rust
https://nlnetlabs.nl/projects/routing/krill/
Mozilla Public License 2.0
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RUSTSEC-2023-0052: webpki: CPU denial of service in certificate path building #1096

Closed github-actions[bot] closed 9 months ago

github-actions[bot] commented 1 year ago

webpki: CPU denial of service in certificate path building

Details
Package webpki
Version 0.21.4
Date 2023-08-22

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.

This was previously reported in <https://github.com/briansmith/webpki/issues/69&gt; and re-reported recently by Luke Malinowski.

rustls-webpki is a fork of this crate which contains a fix for this issue and is actively maintained.

See advisory page for additional details.

timbru commented 9 months ago

Low risk for Krill - as the parent CA and publication server are fairly trusted. We may want to update reqwest regularly though.