Heap-based Buffer Over-read Vulnerability in GNU Binutils 2.31

CVE-2018-18605 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:N/A:P

A heap-based buffer over-read issue was discovered in the function sec_merge_hash_lookup in merge.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31, because _bfd_add_merge_section mishandles section merges when size is not a multiple of entsize. A specially crafted ELF allows remote attackers to cause a denial of service, as demonstrated by ld.

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