CVE-2011-4354

Publication date 26 January 2012

Last updated 24 July 2024

Ubuntu priority

Description

crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssl	11.10 oneiric	Not affected
	11.04 natty	Not affected
	10.10 maverick	Not affected
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Fixed 0.9.8g-4ubuntu3.15

Patch details

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

Package	Patch details
openssl	Upstream: update to http://cvs.openssl.org/fileview?f=openssl/crypto/bn/bn_nist.c&v=1.20

References

Related Ubuntu Security Notices (USN)

USN-1357-1
OpenSSL vulnerabilities
9 February 2012