CVE-2018-17156

Public Exploit

Description

In FreeBSD before 11.2-STABLE(r340268) and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.38%
Vendor Advisory freebsd.org
Affected: FreeBSD FreeBSD
Published at:
Updated at:

References

Link Tags
https://security.freebsd.org/advisories/FreeBSD-EN-18:13.icmp.asc vendor advisory mitigation exploit
http://www.securityfocus.com/bid/106052 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-17156?
CVE-2018-17156 has been scored as a medium severity vulnerability.
How to fix CVE-2018-17156?
To fix CVE-2018-17156, 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-2018-17156 being actively exploited in the wild?
It is possible that CVE-2018-17156 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.
What software or system is affected by CVE-2018-17156?
CVE-2018-17156 affects FreeBSD FreeBSD.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.