cve/2011/CVE-2011-4354.md

CVE-2011-4354

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.

POC

Reference

• http://openwall.com/lists/oss-security/2011/12/01/6

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/chnzzh/OpenSSL-CVE-lib