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nss vulnerabilities

Vulnerability published for nss in the last 30 days: 1. Listed in the KEV catalogue: 0.

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Vulnerabilities: 10

  1. CVE-2023-4421

    Medium · CVSS 6.5EPSS 0.76%No fix published

    CVE-2023-4421

    The NSS code used for checking PKCS#1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well as the length of the encrypted message was leaking through timing side-channel. By sending large number of attacker-selected ciphertexts, the attacker would be able to decrypt a previously intercepted PKCS#1 v1.5 ciphertext (for example, to decrypt a TLS session that used RSA key exchange), or forge a signature using the victim's key. The issue was fixed by implementing the implicit rejection algorithm, in which the NSS returns a deterministic random message in case invalid padd

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