CVE-2023-24609
Last modified
CVE-2023-24609 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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). EPSS estimates a 0.73% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Matrixssl | Matrixssl | >= 4.0.0, <= 4.6.0 |
| Rambus | Tls Toolkit | All versions |
References
- https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit, Third Party Advisory
- https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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