CVE-2011-0411

Publication date 16 March 2011

Last updated 24 July 2024

Ubuntu priority

The STARTTLS implementation in Postfix 2.4.x before 2.4.16, 2.5.x before 2.5.12, 2.6.x before 2.6.9, and 2.7.x before 2.7.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
postfix	10.10 maverick	Fixed 2.7.1-1ubuntu0.1
	10.04 LTS lucid	Fixed 2.7.0-1ubuntu0.1
	9.10 karmic	Fixed 2.6.5-3ubuntu0.1
	8.04 LTS hardy	Fixed 2.5.1-2ubuntu1.3
	6.06 LTS dapper	Fixed 2.2.10-1ubuntu0.3

Notes

mdeslaur

postfix 2.8 and 2.9 are not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
postfix	Upstream: http://archive.mgm51.com/mirrors/postfix-source/official/postfix-2.4-patch16.gz Upstream: http://archive.mgm51.com/mirrors/postfix-source/official/postfix-2.5-patch12.gz Upstream: http://archive.mgm51.com/mirrors/postfix-source/official/postfix-2.6-patch09.gz Upstream: http://archive.mgm51.com/mirrors/postfix-source/official/postfix-2.7-patch03.gz

References

Related Ubuntu Security Notices (USN)