Improper Authentication Affecting ntp package, versions <1:4.2.4p4+dfsg-8


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.92% (91st percentile)

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  • Snyk IDSNYK-DEBIAN9-NTP-373030
  • published7 Jan 2009
  • disclosed7 Jan 2009

Introduced: 7 Jan 2009

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

How to fix?

Upgrade Debian:9 ntp to version 1:4.2.4p4+dfsg-8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.

CVSS Scores

version 3.1