CVE-2009-0021

NTP <4.2.4p5/4.2.5p150 - Info Disclosure

Title source: llm
STIX 2.1

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)

Core 19
Core References
Vendor Advisory x_refsource_confirm
http://support.apple.com/kb/HT3549
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/499827/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1021533
Various Sources mailing-list x_refsource_mlist
https://lists.ntp.org/pipermail/announce/2009-January/000055.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/34642
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-0046.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/35074
Mailing List vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/33558
Various Sources x_refsource_misc
http://www.ocert.org/advisories/ocert-2008-016.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/33648
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/33406
US Government Resource third-party-advisory x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/1297
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/0042

Scores

EPSS 0.0317
EPSS Percentile 86.4%

Details

CWE
CWE-287
Status published
Products (6)
ntp/ntp 4.2.0
ntp/ntp 4.2.2
ntp/ntp 4.2.4p1
ntp/ntp 4.2.4p2
ntp/ntp 4.2.4p3
ntp/ntp < 4.2.4p4
Published Jan 07, 2009
Tracked Since Feb 18, 2026