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High severity7.5NVD Advisory· Published Dec 22, 2023· Updated Jun 17, 2026

CVE-2023-24609

CVE-2023-24609

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5
  • Matrixssl/Matrixssl2 versions
    cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*range: >=4.0.0,<=4.6.0
    • (no CPE)range: <=4.6.0
  • Rambus/TLS Toolkit2 versions
    cpe:2.3:a:rambus:tls_toolkit:-:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:rambus:tls_toolkit:-:*:*:*:*:*:*:*
    • (no CPE)
  • Matrix/SSLdescription

Patches

Vulnerability mechanics

References

2

News mentions

0

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