CVE-2018-20651

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.24%
Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/106440 third party advisory vdb entry
https://sourceware.org/bugzilla/show_bug.cgi?id=24041 third party advisory issue tracking exploit
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=54025d5812ff100f5f0654eb7e1ffd50f2e37f5f
https://support.f5.com/csp/article/K38336243 third party advisory
https://security.gentoo.org/glsa/201908-01 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
https://usn.ubuntu.com/4336-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20651?
CVE-2018-20651 has been scored as a medium severity vulnerability.
How to fix CVE-2018-20651?
To fix CVE-2018-20651, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20651 being actively exploited in the wild?
It is possible that CVE-2018-20651 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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