[Bug 202209] devel/pcre: Heap Overflow Vulnerability (CVE TBD)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202209

            Bug ID: 202209
           Summary: devel/pcre: Heap Overflow Vulnerability (CVE TBD)
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: bf at FreeBSD.org
          Reporter: jason.unovitch at gmail.com
          Assignee: bf at FreeBSD.org
             Flags: maintainer-feedback?(bf at FreeBSD.org)

PCRE library is prone to a vulnerability which leads to Heap Overflow.
During the compilation of a malformed regular expression, more data is
written on the malloced block than the expected size output by
compile_regex. Exploits with advanced Heap Fengshui techniques may allow an
attacker to execute arbitrary code in the context of the user running the
affected application.

Latest version of PCRE is prone to a Heap Overflow vulnerability which could
caused by the following regular expression.

/(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/

Reference:
https://bugs.exim.org/show_bug.cgi?id=1667

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