[pcre-dev] [Bug 2048] New: another infinite loop in pcre_exe…

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Author: admin
Date:  
To: pcre-dev
Subject: [pcre-dev] [Bug 2048] New: another infinite loop in pcre_exec.c
https://bugs.exim.org/show_bug.cgi?id=2048

            Bug ID: 2048
           Summary: another infinite loop in pcre_exec.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 988
--> https://bugs.exim.org/attachment.cgi?id=988&action=edit
stacktrace

Hello,

I found an infinite loop through fuzzing.

IMPORTANT:
I don't know if it can be closed as a duplicate of 2047, the stacktrace seems
to point to a different line but they can have the same root cause.

It was tested on version 8.40, compiled with clang-3.9.1

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

Output, included stacktrace in attachment.

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

Reproducer:
https://github.com/asarubbo/poc/blob/master/00199-pcre-infiniteloop2

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

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