Crypt::CBC Perl module 2.16 and earlier, when running in RandomIV mode, uses an initialization vector (IV) of 8 bytes, which results in weaker encryption when used with a cipher that requires a larger block size than 8 bytes, such as Rijndael.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24954
http://www.securityfocus.com/bid/16802
http://www.securityfocus.com/archive/1/425966/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2008-0261.html
http://www.novell.com/linux/security/advisories/2006_38_security.html
http://www.gentoo.org/security/en/glsa/glsa-200603-15.xml
http://www.debian.org/security/2006/dsa-996
http://securityreason.com/securityalert/488
http://secunia.com/advisories/31493
http://secunia.com/advisories/20899
http://secunia.com/advisories/19303
http://secunia.com/advisories/19187