coffgen.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.29.1, does not validate the symbol count, which allows remote attackers to cause a denial of service (integer overflow and application crash, or excessive memory allocation) or possibly have unspecified other impact via a crafted PE file.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=6cee897971d4d7cd37d2a686bb6d2aa3e759c8ca | |
| https://security.gentoo.org/glsa/201811-17 | vendor advisory |
| https://sourceware.org/bugzilla/show_bug.cgi?id=22385 | patch issue tracking exploit |