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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.034
EPSS Ranking 86.7%
CVSS Severity
CVSS v2 Score 5.0
References
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
- http://secunia.com/advisories/33406
- http://secunia.com/advisories/33558
- http://secunia.com/advisories/33648
- http://secunia.com/advisories/34642
- http://secunia.com/advisories/35074
- http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
- http://support.apple.com/kb/HT3549
- http://www.ocert.org/advisories/ocert-2008-016.html
- http://www.redhat.com/support/errata/RHSA-2009-0046.html
- http://www.securityfocus.com/archive/1/499827/100/0/threaded
- http://www.securitytracker.com/id?1021533
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html
- http://www.vupen.com/english/advisories/2009/0042
- http://www.vupen.com/english/advisories/2009/1297
- https://lists.ntp.org/pipermail/announce/2009-January/000055.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
- http://secunia.com/advisories/33406
- http://secunia.com/advisories/33558
- http://secunia.com/advisories/33648
- http://secunia.com/advisories/34642
- http://secunia.com/advisories/35074
- http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
- http://support.apple.com/kb/HT3549
- http://www.ocert.org/advisories/ocert-2008-016.html
- http://www.redhat.com/support/errata/RHSA-2009-0046.html
- http://www.securityfocus.com/archive/1/499827/100/0/threaded
- http://www.securitytracker.com/id?1021533
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html
- http://www.vupen.com/english/advisories/2009/0042
- http://www.vupen.com/english/advisories/2009/1297
- https://lists.ntp.org/pipermail/announce/2009-January/000055.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
Products affected by CVE-2009-0021
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cpe:2.3:a:ntp:ntp:-
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cpe:2.3:a:ntp:ntp:4.0
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cpe:2.3:a:ntp:ntp:4.0.72
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cpe:2.3:a:ntp:ntp:4.0.73
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cpe:2.3:a:ntp:ntp:4.0.90
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cpe:2.3:a:ntp:ntp:4.0.91
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cpe:2.3:a:ntp:ntp:4.0.92
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cpe:2.3:a:ntp:ntp:4.0.93
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cpe:2.3:a:ntp:ntp:4.0.94
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cpe:2.3:a:ntp:ntp:4.0.95
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cpe:2.3:a:ntp:ntp:4.0.96
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cpe:2.3:a:ntp:ntp:4.0.97
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cpe:2.3:a:ntp:ntp:4.0.98
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cpe:2.3:a:ntp:ntp:4.0.99
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cpe:2.3:a:ntp:ntp:4.1.0
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cpe:2.3:a:ntp:ntp:4.1.2
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cpe:2.3:a:ntp:ntp:4.2.0
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cpe:2.3:a:ntp:ntp:4.2.2
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cpe:2.3:a:ntp:ntp:4.2.4
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cpe:2.3:a:ntp:ntp:4.2.4p1
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cpe:2.3:a:ntp:ntp:4.2.4p2
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cpe:2.3:a:ntp:ntp:4.2.4p3