[pcre-dev] [Bug 2046] New: left shift and signed integer ove…

https://bugs.exim.org/show_bug.cgi?id=2046

            Bug ID: 2046
           Summary: left shift and signed integer overflow in pcretest.c
           Product: PCRE
           Version: 8.40
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: bug
          Priority: medium
         Component: Code
          Assignee: ph10@???
          Reporter: ago@???
                CC: pcre-dev@???

Created attachment 986
--> https://bugs.exim.org/attachment.cgi?id=986&action=edit
stacktrace

Hello,

I found a left shift and signed integer overflow through fuzzing.
One of the two signed integer overflow (pcretest.c:4837:34) was already
reported in bug 2044. This provided testcase is able to reach the reported bug
too.
It was tested on version 8.40, compiled with clang-3.9.1

Since pcre_jit_compile.c is part of the library you can consider this a
security bug and change the severity

Output, included stacktrace in attachment.

Command to reproduce:
# pcretest -16 -d $FILE

Reproducer:

( I know that is preferable attach reproducer here, but this link won't expire
in the future )

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