CVE-2009-0021

Publication date 7 January 2009

Last updated 24 July 2024

Ubuntu priority

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ntp	8.10 intrepid	Fixed 1:4.2.4p4+dfsg-6ubuntu2.2
	8.04 LTS hardy	Fixed 1:4.2.4p4+dfsg-3ubuntu2.1
	7.10 gutsy	Fixed 1:4.2.4p0+dfsg-1ubuntu2.1
	6.06 LTS dapper	Fixed 1:4.2.0a+stable-8.1ubuntu6.1

How can I get the fixes?
What do statuses mean?

References

MITRE
NVD
Launchpad
Debian

Related Ubuntu Security Notices (USN)

USN-705-1
NTP vulnerability
8 January 2009

Other references

http://www.ocert.org/advisories/ocert-2008-016.html
https://www.cve.org/CVERecord?id=CVE-2009-0021