CVE-2009-0021

Published: 7 January 2009

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.

Priority

Status

Package	Release	Status
ntp Launchpad, Ubuntu, Debian	dapper	Released (1:4.2.0a+stable-8.1ubuntu6.1)
	gutsy	Released (1:4.2.4p0+dfsg-1ubuntu2.1)
	hardy	Released (1:4.2.4p4+dfsg-3ubuntu2.1)
	intrepid	Released (1:4.2.4p4+dfsg-6ubuntu2.2)
	upstream	Pending (4.2.4p6)

References

http://www.ocert.org/advisories/ocert-2008-016.html
https://ubuntu.com/security/notices/USN-705-1
https://www.cve.org/CVERecord?id=CVE-2009-0021
NVD
Launchpad
Debian

Bugs

https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/314776

Join the discussion

Ubuntu security updates mailing list
Security announcements mailing list

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›