Vulnerability Description
Matrix SSL 4.x through 4.6.0 and Rambus TLS Toolkit have a length-subtraction integer overflow for Client Hello Pre-Shared Key extension parsing in the TLS 1.3 server. An attacked device calculates an SHA-2 hash over at least 65 KB (in RAM). With a large number of crafted TLS messages, the CPU becomes heavily loaded. This occurs in tls13VerifyBinder and tls13TranscriptHashUpdate.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matrixssl | Matrixssl | >= 4.0.0, <= 4.6.0 |
| Rambus | Tls Toolkit | - |
Related Weaknesses (CWE)
References
- https://www.rambus.com/security/software-protocols/tls-toolkit/Product
- https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504ExploitThird Party Advisory
- https://www.rambus.com/security/software-protocols/tls-toolkit/Product
- https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504ExploitThird Party Advisory
FAQ
What is CVE-2023-24609?
CVE-2023-24609 is a vulnerability with a CVSS score of 7.5 (HIGH). Matrix SSL 4.x through 4.6.0 and Rambus TLS Toolkit have a length-subtraction integer overflow for Client Hello Pre-Shared Key extension parsing in the TLS 1.3 server. An attacked device calculates an...
How severe is CVE-2023-24609?
CVE-2023-24609 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-24609?
Check the references section above for vendor advisories and patch information. Affected products include: Matrixssl Matrixssl, Rambus Tls Toolkit.