VULNERABILITY INTELLIGENCE

CVE-2009-0021

CVSS score5 NONE
EPSS probability3.22%
CISA KEVNot currently listed
Published2009-01-07
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N

Description

NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077.

Weakness classification

  • nvd@nist.gov: CWE-287

Primary references