National Vulnerability Database

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    Vulnerabilities Detail

CVE-2009-0021 Detail

Current 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.

Source:  MITRE
Description Last Modified:  01/07/2009
View Analysis Description

Evaluator 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 v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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.ocert.org/advisories/ocert-2008-016.html
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 US Government Resource
http://www.vupen.com/english/advisories/2009/0042 Vendor Advisory
http://www.vupen.com/english/advisories/2009/1297 Vendor Advisory
https://lists.ntp.org/pipermail/announce/2009-January/000055.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10035

References to Check Content

Identifier:
oval:org.mitre.oval:def:10035
Check System:
http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:10035

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-0021
NVD Published Date:
01/07/2009
NVD Last Modified:
10/11/2018