Vulnerability Details CVE-2023-24609
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 40.6%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2023-24609
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cpe:2.3:a:matrixssl:matrixssl:4.0.0
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cpe:2.3:a:matrixssl:matrixssl:4.0.1
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cpe:2.3:a:matrixssl:matrixssl:4.0.2
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cpe:2.3:a:matrixssl:matrixssl:4.1.0
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cpe:2.3:a:matrixssl:matrixssl:4.2.0
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cpe:2.3:a:matrixssl:matrixssl:4.2.1
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cpe:2.3:a:matrixssl:matrixssl:4.2.2
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cpe:2.3:a:matrixssl:matrixssl:4.3.0
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cpe:2.3:a:matrixssl:matrixssl:4.5.1
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cpe:2.3:a:matrixssl:matrixssl:4.6.0
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cpe:2.3:a:rambus:tls_toolkit:-