spamassassin -- multiple vulnerabilities

the Apache Spamassassin project reports:

In Apache SpamAssassin, using HTML::Parser, we setup an object and
hook into the begin and end tag event handlers In both cases, the
“open” event is immediately followed by a “close” event - even if
the tag does not close in the HTML being parsed.
Because of this, we are missing the “text” event to deal with
the object normally. This can cause carefully crafted emails that
might take more scan time than expected leading to a Denial of
Service.
Fix a reliance on “.” in @INC in one configuration script. Whether
this can be exploited in any way is uncertain.
Fix a potential Remote Code Execution bug with the PDFInfo plugin.
Thanks to cPanel Security Team for their report of this issue.
Fourth, this release fixes a local user code injection in the
meta rule syntax. Thanks again to cPanel Security Team for their
report of this issue.