Vulnerability in Gnu Gnutls

CVE-2023-5981

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.

EPSS: 0.013 (66.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-5981?
CVE-2023-5981 is a medium-severity vulnerability in Gnu Gnutls, classified under CWE-208. CVSS score: 5.9/10. Published 2023-11-28.
How severe is CVE-2023-5981?
Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2023-5981 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.