A flaw was found in the ignore_section_sym function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, does not validate the output_section pointer in the case of a symtab entry with a "SECTION" type that has a "0" value, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted file, as demonstrated by objcopy.
Created binutils tracking bugs for this issue:
Affects: fedora-all [bug 1574700]
Created mingw-binutils tracking bugs for this issue:
Affects: epel-all [bug 1574698]
Affects: fedora-all [bug 1574701]
The worst outcome should be a mere crash/application abort.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2018:3032 https://access.redhat.com/errata/RHSA-2018:3032