CVE-2023-3724
Summary
| CVE | CVE-2023-3724 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2023-07-17 22:15:00 UTC |
| Updated | 2023-07-28 13:54:00 UTC |
| Description | If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used. |
Risk And Classification
Problem Types: CWE-295
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| add tls extension sanity check by JacobBarthelmeh · Pull Request #6412 · wolfSSL/wolfssl · GitHub | MISC | github.com | |
| wolfSSL Security Vulnerabilities | Documentation – wolfSSL | MISC | www.wolfssl.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.