[pcre-dev] [Bug 2055] New: stack-based buffer overflow in p…

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A: pcre-dev
Assumpte: [pcre-dev] [Bug 2055] New: stack-based buffer overflow in pcre32_copy_substring (pcre_get.c)
https://bugs.exim.org/show_bug.cgi?id=2055

            Bug ID: 2055
           Summary: stack-based buffer overflow in pcre32_copy_substring
                    (pcre_get.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 996
--> https://bugs.exim.org/attachment.cgi?id=996&action=edit
stacktrace

Hello,

I found astack overflow write through fuzzing.
It was tested on version 8.40, compiled with clang-3.9.1

Since pcre_get.c is part of the library, you can consider it a security bug and
change the severity

Output, included stacktrace in attachment.

Command to reproduce:
# pcretest -32 -d $FILE

Reproducer:


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

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