REDHAT-BUG-1574696
First published: Thu May 03 2018(Updated: )
A flaw was found in the _bfd_XX_bfd_copy_private_bfd_data_common function in peXXigen.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, processes a negative Data Directory size with an unbounded loop that increases the value of (external_IMAGE_DEBUG_DIRECTORY) *edd so that the address exceeds its own memory region, resulting in an out-of-bounds memory write, as demonstrated by objcopy copying private info with _bfd_pex64_bfd_copy_private_bfd_data_common in pex64igen.c. References: <a href="https://sourceware.org/bugzilla/show_bug.cgi?id=23110">https://sourceware.org/bugzilla/show_bug.cgi?id=23110</a> Patch: <a href="https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aa4a8c2a2a67545e90c877162c53cc9de42dc8b4">https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aa4a8c2a2a67545e90c877162c53cc9de42dc8b4</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu/binutils | ||
| GNU Binutils (libbfd) |
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Reference Links
- https://sourceware.org/bugzilla/show_bug.cgi?id=23110
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aa4a8c2a2a67545e90c877162c53cc9de42dc8b4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1574700
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1574698
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1574701
- https://access.redhat.com/errata/RHSA-2018:3032
- https://bugzilla.redhat.com/show_bug.cgi?id=1574696
Frequently Asked Questions
What is the severity of REDHAT-BUG-1574696?
The severity of REDHAT-BUG-1574696 is classified as a medium-level vulnerability due to potential unbounded loops.
How do I fix REDHAT-BUG-1574696?
To fix REDHAT-BUG-1574696, you should update to the latest version of GNU Binutils or apply the relevant patches provided by your Linux distribution.
What software is affected by REDHAT-BUG-1574696?
REDHAT-BUG-1574696 affects the Binary File Descriptor (BFD) library as distributed in GNU Binutils 2.30.
What is the impact of REDHAT-BUG-1574696?
The impact of REDHAT-BUG-1574696 is that it may cause denial of service through the potential for an unbounded loop when processing specific inputs.
Is there a workaround for REDHAT-BUG-1574696?
Currently, the best workaround for REDHAT-BUG-1574696 is to avoid using affected versions of GNU Binutils until a fix is applied.
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- vendor/gnu
- canonical/ubuntu/binutils
- canonical/gnu binutils (libbfd)