CVE-2018-20651

MEDIUM

Description

A NULL pointer dereference was discovered in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.1. This occurs for a crafted ET_DYN with no program headers. A specially crafted ELF file allows remote attackers to cause a denial of service, as demonstrated by ld.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html

http://www.securityfocus.com/bid/106440

https://security.gentoo.org/glsa/201908-01

https://sourceware.org/bugzilla/show_bug.cgi?id=24041

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=54025d5812ff100f5f0654eb7e1ffd50f2e37f5f

https://support.f5.com/csp/article/K38336243

Details

Source: MITRE

Published: 2019-01-01

Updated: 2019-08-03

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM