Description (CNA)
rustls-webpki (the Rust webpki fork used by rustls) versions >= 0.101.0 and prior to 0.103.12 and 0.104.0-alpha.6 incorrectly accepted permitted-subtree DNS name constraints for certificates asserting a wildcard name. For example, a name constraint of accept.example.com was treated as satisfied by a certificate for *.example.com, which could feasibly assert reject.example.com — a name outside the permitted subtree. Because name constraints are restrictions applied to otherwise properly issued certificates, the issue is only reachable after signature verification succeeds and requires a misissued wildcard certificate to exploit.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| rustls / webpki | affected 0.101.0 before 0.103.12; affected 0.104.0-alpha.1 before 0.104.0-alpha.6 |
CWE
CWE-295
References
- https://github.com/rustls/webpki/security/advisories/GHSA-xgp8-3hg3-c2mh
- https://www.vulncheck.com/advisories/rustls-webpki-0.101.0-before-0.103.12-name-constraint-bypass
ADP enrichment
No English description supplied.
No references supplied.