CVE-2009-0021

NTP <4.2.4p5/4.2.5p150 - Info Disclosure

Title source: llm

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.

References (19)

[Mailing List] http://lists.apple.com/archives/security-announce/2009/May/msg00002.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html

[Vendor Advisory] http://secunia.com/advisories/33406

[Vendor Advisory] http://secunia.com/advisories/33558

[Vendor Advisory] http://secunia.com/advisories/33648

[Vendor Advisory] http://secunia.com/advisories/34642

[Vendor Advisory] http://secunia.com/advisories/35074

[Vendor Advisory] http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177

[Vendor Advisory] http://support.apple.com/kb/HT3549

[Various Sources] http://www.ocert.org/advisories/ocert-2008-016.html

[Vendor Advisory] http://www.redhat.com/support/errata/RHSA-2009-0046.html

[US Government Resource] http://www.us-cert.gov/cas/techalerts/TA09-133A.html

[Vendor Advisory] http://www.vupen.com/english/advisories/2009/0042

[Vendor Advisory] http://www.vupen.com/english/advisories/2009/1297

[Various Sources] https://lists.ntp.org/pipermail/announce/2009-January/000055.html

[Third Party Advisory, VDB Entry] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/archive/1/499827/100/0/threaded

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id?1021533

Scores

EPSS 0.0222

EPSS Percentile 84.3%

Classification

CWE

CWE-287

Status draft

Affected Products (6)

ntp/ntp < 4.2.4p4

ntp/ntp

ntp/ntp

ntp/ntp

ntp/ntp

ntp/ntp

Timeline

Published Jan 07, 2009

Tracked Since Feb 18, 2026