CVE-2014-3511

Publication date 7 August 2014

Last updated 24 July 2024

Ubuntu priority

Description

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssl	14.04 LTS trusty	Fixed 1.0.1f-1ubuntu2.5
	12.04 LTS precise	Fixed 1.0.1-4ubuntu5.17
	10.04 LTS lucid	Not affected
openssl098	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not in release

Patch details

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

Package	Patch details
openssl	Upstream: https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=fc4f4cdb8bf9981904e652abf69b892a45bddacf Upstream: https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=fc4bd2f287582c5f51f9549727fd5a49e9fc3012

References

Related Ubuntu Security Notices (USN)

USN-2308-1
OpenSSL vulnerabilities
7 August 2014