CVE-2009-0021
- Source
- https://cve.org/CVERecord?id=CVE-2009-0021
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2009-0021.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2009-0021
- Downstream
- Withdrawn
- 2026-01-27T04:09:32.582470Z
- Published
- 2009-01-07T17:30:00Z
- Modified
- 2026-01-27T04:09:32.582470Z
- Summary
- [none]
- Details
-
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
-
- 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://www.ocert.org/advisories/ocert-2008-016.html
- http://www.vupen.com/english/advisories/2009/0042
- http://www.vupen.com/english/advisories/2009/1297
- 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://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
- http://support.apple.com/kb/HT3549
- 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
- https://lists.ntp.org/pipermail/announce/2009-January/000055.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035