Improper Authentication Affecting ntp package, versions <1:4.2.4p4+dfsg-8
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-DEBIAN11-NTP-524650
- published 7 Jan 2009
- disclosed 7 Jan 2009
Introduced: 7 Jan 2009
CVE-2009-0021 Open this link in a new tabHow to fix?
Upgrade Debian:11 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:11 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.
References
- http://support.apple.com/kb/HT3549
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://www.securityfocus.com/archive/1/499827/100/0/threaded
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html
- https://security-tracker.debian.org/tracker/CVE-2009-0021
- http://www.ocert.org/advisories/ocert-2008-016.html
- https://lists.ntp.org/pipermail/announce/2009-January/000055.html
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
- 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.securitytracker.com/id?1021533
- http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177
- http://www.vupen.com/english/advisories/2009/0042
- http://www.vupen.com/english/advisories/2009/1297
- http://www.redhat.com/support/errata/RHSA-2009-0046.html