cve/2023/CVE-2023-24609.md

### [CVE-2023-24609](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-24609)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### 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.

### POC

#### Reference
- https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds