CVE-2018-17156

MEDIUM

FreeBSD <11.2-STABLE(r340268) & 11.2-RELEASE-p5 - Buffer Underwrite

Title source: llm

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.

References (2)

Core 2

Core References

Exploit, Mitigation, Vendor Advisory x_refsource_confirm

https://security.freebsd.org/advisories/FreeBSD-EN-18:13.icmp.asc

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/106052

Scores

CVSS v3 5.9

EPSS 0.0038

EPSS Percentile 59.7%

Attack Vector NETWORK

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

Details

CWE

CWE-787

Status published

Products (2)

freebsd/freebsd 11.2 p5

freebsd/freebsd < 11.2

Published Nov 28, 2018

Tracked Since Feb 18, 2026