CVE-2009-0021

N/A Unknown
Published: January 07, 2009 Modified: April 23, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
Source: secalert@redhat.com
http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
Source: secalert@redhat.com
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
Source: secalert@redhat.com
http://secunia.com/advisories/33406
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/33558
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/33648
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/34642
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/35074
Source: secalert@redhat.com
Vendor Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
Source: secalert@redhat.com
http://support.apple.com/kb/HT3549
Source: secalert@redhat.com
http://www.ocert.org/advisories/ocert-2008-016.html
Source: secalert@redhat.com
http://www.redhat.com/support/errata/RHSA-2009-0046.html
Source: secalert@redhat.com
http://www.securityfocus.com/archive/1/499827/100/0/threaded
Source: secalert@redhat.com
http://www.securitytracker.com/id?1021533
Source: secalert@redhat.com
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
Source: secalert@redhat.com
US Government Resource
http://www.vupen.com/english/advisories/2009/0042
Source: secalert@redhat.com
Vendor Advisory
http://www.vupen.com/english/advisories/2009/1297
Source: secalert@redhat.com
Vendor Advisory
https://lists.ntp.org/pipermail/announce/2009-January/000055.html
Source: secalert@redhat.com
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
Source: secalert@redhat.com
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/33406
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/33558
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/33648
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/34642
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/35074
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
Source: af854a3a-2127-422b-91ae-364da2661108
http://support.apple.com/kb/HT3549
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ocert.org/advisories/ocert-2008-016.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.redhat.com/support/errata/RHSA-2009-0046.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/archive/1/499827/100/0/threaded
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securitytracker.com/id?1021533
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
Source: af854a3a-2127-422b-91ae-364da2661108
US Government Resource
http://www.vupen.com/english/advisories/2009/0042
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.vupen.com/english/advisories/2009/1297
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://lists.ntp.org/pipermail/announce/2009-January/000055.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
Source: af854a3a-2127-422b-91ae-364da2661108

38 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
2.2%
85th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-287

Affected Vendors

ntp

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