[Bug tools/21299] New: heap-based buffer overflow in handle_gnu_hash (readelf.c)

[ago at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21299

            Bug ID: 21299
           Summary: heap-based buffer overflow in handle_gnu_hash
                    (readelf.c)
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: unassigned at sourceware dot org
          Reporter: ago at gentoo dot org
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

Created attachment 9936
  --> https://sourceware.org/bugzilla/attachment.cgi?id=9936&action=edit
stacktrace

On elfutils-0.168:

# eu-readelf -a $FILE

READ of size 4 at 0x611000009ffc thread T0
    #0 0x421a8b in handle_gnu_hash
/tmp/portage/dev-libs/elfutils-0.168/work/elfutils-0.168/src/readelf.c:3268

Compiled with: gcc-6.3.0

Reproducer:
https://github.com/asarubbo/poc/blob/master/00225-elfutils-heapoverflow-handle_gnu_hash

Stacktrace attached.

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