dwarf2.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (integer underflow or overflow, and application crash) via an ELF file with a corrupt DWARF FORM block, as demonstrated by nm.
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://access.redhat.com/errata/RHSA-2018:3032 | third party advisory vendor advisory |
| https://sourceware.org/bugzilla/show_bug.cgi?id=22895 | patch exploit third party advisory issue tracking |
| https://security.gentoo.org/glsa/201811-17 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHBA-2019:0327 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html | vendor advisory |