[pcre-dev] [Bug 2082] New: left shift in pcre2_jit_compile.c…

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Author: admin
Date:  
To: pcre-dev
Subject: [pcre-dev] [Bug 2082] New: left shift in pcre2_jit_compile.c:8369
https://bugs.exim.org/show_bug.cgi?id=2082

            Bug ID: 2082
           Summary: left shift in pcre2_jit_compile.c:8369
           Product: PCRE
           Version: 10.23 (PCRE2)
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: security
          Priority: medium
         Component: Code
          Assignee: ph10@???
          Reporter: ago@???
                CC: pcre-dev@???


Hello,

I found a left shift through fuzzing.
It was tested on version 10.23, compiled with clang-3.9.1

Output:
pcre2-10.23/src/pcre2_jit_compile.c:8369:96: runtime error: left shift of
negative value -1

Command to reproduce:
# pcretest -d -i -8 $FILE

Reproducer:
https://github.com/asarubbo/poc/blob/master/00222-pcre2-leftshift-pcre2_jit_compile

( I know that is preferable attach reproducer here, but this link won't expire
in the future )
If someone think that it will expire, feel free to download it and reattach it
here.

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