https://bugs.exim.org/show_bug.cgi?id=2057
Bug ID: 2057
Summary: another 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: p...@hermes.cam.ac.uk
Reporter: a...@gentoo.org
CC: pcre-dev@exim.org
Created attachment 998
--> https://bugs.exim.org/attachment.cgi?id=998&action=edit
stacktrace
Hello,
I found a stack overflow write through fuzzing.
The bug seems similar to bug 2055, but the size of the write changes.
It was tested on version 8.40, compiled with clang-3.9.1
Output, included stacktrace in attachment.
Command to reproduce:
# pcretest -32 -d $FILE
Reproducer:
https://github.com/asarubbo/poc/blob/master/00209-pcre-stackoverflow2-read_capture_name32
( I know that is preferable attach reproducer here, but this link won't expire
in the future )
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