rustls before 0.23.46 Key Exchange Downgrade via Unauthenticated ServerHello
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| rustls | rustls | unaffected |
|
No data.
No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rustls | Rustls |
|
||||||||||||
| Rustls Project | Rustls |
|
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.188% probability within 30 days)
Key SSVC decision points have not yet been added.
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rustls
Rustls rustls |
|
| Vendors & Products |
Rustls
Rustls rustls |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | rustls before 0.23.46 contains a key exchange downgrade vulnerability that allows network attackers to poison the per-server-name key-exchange group record via an unauthenticated ServerHello. Attackers can answer one connection with a ServerHello selecting X25519, causing later ClientHellos to send only classical shares and lose post-quantum confidentiality. | |
| Title | rustls before 0.23.46 Key Exchange Downgrade via Unauthenticated ServerHello | |
| First Time appeared |
Rustls Project
Rustls Project rustls |
|
| Weaknesses | CWE-757 | |
| CPEs | cpe:2.3:a:rustls_project:rustls:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Rustls Project
Rustls Project rustls |
|
| References |
| |
| Metrics |
cvssV3_1
|