Description of Problem:
A patch was issued on December 18th to fix a format string bug.
I'm assuming this is referring to version 3.22, which was released as an errata.
It was only released for Red Hat 7.2. Installing that RPM gives the following
# rpm -i stunnel-3.22-1.i386.rpm
error: failed dependencies:
libcrypto.so.2 is needed by stunnel-3.22-1
libssl.so.2 is needed by stunnel-3.22-1
Sorry, i must have been blind...
As I can't close the bug myself, I kindly ask you to do so. Sorry for that.