VULNERABILITY INTELLIGENCE

CVE-2018-16868

CVSS score5.6 MEDIUM
EPSS probability0.58%
CISA KEVNot currently listed
Published2018-12-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Description

A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Weakness classification

  • CWE-203: Observable Discrepancy

Primary references