National Cyber-Alert System

Vulnerability Summary for CVE-2009-0021

Overview

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.

Description

Note that versions 4.2.5 before 4.2.5p150 are development versions and not production versions. Development versions are not included in the CPE configuration for CVEs.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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US-CERT Technical Alert: TA09-133A

Name: TA09-133A

Hyperlink:http://www.us-cert.gov/cas/techalerts/TA09-133A.html

External Source: VUPEN

Name: ADV-2009-0042

Type: Advisory; Patch Information

Hyperlink:http://www.frsirt.com/english/advisories/2009/0042

External Source: MLIST

Name: [announce] 20090108 NTP 4.2.4p6 Released

Hyperlink:https://lists.ntp.org/pipermail/announce/2009-January/000055.html

External Source: VUPEN

Name: ADV-2009-1297

Type: Advisory

Hyperlink:http://www.vupen.com/english/advisories/2009/1297

External Source: SECTRACK

Name: 1021533

Hyperlink:http://www.securitytracker.com/id?1021533

External Source: REDHAT

Name: RHSA-2009:0046

Hyperlink:http://www.redhat.com/support/errata/RHSA-2009-0046.html

External Source: MISC

Name: http://www.ocert.org/advisories/ocert-2008-016.html

Hyperlink:http://www.ocert.org/advisories/ocert-2008-016.html

External Source: CONFIRM

Name: http://support.apple.com/kb/HT3549

Hyperlink:http://support.apple.com/kb/HT3549

External Source: SLACKWARE

Name: SSA:2009-014-03

Hyperlink:http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.531177

External Source: SECUNIA

Name: 35074

Type: Advisory

Hyperlink:http://secunia.com/advisories/35074

External Source: SECUNIA

Name: 34642

Type: Advisory

Hyperlink:http://secunia.com/advisories/34642

External Source: SECUNIA

Name: 33648

Type: Advisory

Hyperlink:http://secunia.com/advisories/33648

External Source: SECUNIA

Name: 33558

Type: Advisory

Hyperlink:http://secunia.com/advisories/33558

External Source: SECUNIA

Name: 33406

Type: Advisory

Hyperlink:http://secunia.com/advisories/33406

External Source: SUSE

Name: SUSE-SR:2009:008

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html

External Source: SUSE

Name: SUSE-SR:2009:005

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html

External Source: APPLE

Name: APPLE-SA-2009-05-12

Hyperlink:http://lists.apple.com/archives/security-announce/2009/May/msg00002.html