Matrix SSL 4.x up to and including 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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matrixssl matrixssl |
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rambus tls toolkit - |
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