CERT Advisory: Multiple Vulnerabilities In OpenSSL
"There are four remotely exploitable buffer overflows in OpenSSL. There are also encoding problems in the ASN.1 library used by OpenSSL. Several of these vulnerabilities could be used by a remote attacker to execute arbitrary code on the target system. All could be used to create denial of service."
OpenSSL
A toolkit implementing SSL v2/v3 and TLS protocols with full-strength cryptography world-wide. It is based on SSLeay, developed by Eric Young and Tim Hudson. [Free / Open Source] (The OpenSSL Project)
OpenSSL Certificate Cookbook
Instructions to make a CA with OpenSSL, Apache, and Perl.
OpenSSL PKCS#12 Program FAQ
An utility to generate PKCS#12 certificates with OpenSSL/SSLeay. (Stephen Henson)