Improper Authentication Affecting ntp package, versions [,4.2.4p5)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
2.92% (91st percentile)

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  • Snyk IDSNYK-UNMANAGED-NTP-2382775
  • published26 Jan 2022
  • disclosed7 Jan 2009
  • creditUnknown

Introduced: 7 Jan 2009

CVE-2009-0021  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade ntp to version 4.2.4p5 or higher.

Overview

Affected versions of this package are vulnerable to Improper Authentication. 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.

References

CVSS Scores

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