Vulnerability Details : CVE-2009-0021

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.
Published 2009-01-07 17:30:00
Updated 2018-10-11 20:58:43
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Products affected by CVE-2009-0021

Exploit prediction scoring system (EPSS) score for CVE-2009-0021

EPSS FAQ
2.92%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-0021

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
 NIST

CWE ids for CVE-2009-0021

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2009-0021

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