CVE Catalog

CVE-2023-5981

MediumCVSS 5.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
1.27%

69th percentile - higher than 69% of all known CVEs

Summary

A vulnerability was found where response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from those with correct PKCS#1 v1.5 padding. Timing differences may enable a side-channel attack.

Risk Assessment

An attacker may exploit timing differences to infer padding validity, potentially leading to data disclosure. Implementations using RSA-PSK are at risk.

Recommendation

Update the affected component to a patched version. Consider disabling RSA-PSK if not required.

Related vulnerabilities

Original NVD description (English source)

A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS