PT-2018-13929 · Freebsd · Freebsd

Published 2018-11-28 · Updated 2019-10-03 · CVE-2018-17156

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions prior to 11.2-STABLE(r340268) and 11.2-RELEASE-p5

Description The issue arises from incorrect padding accounting on 64-bit platforms, leading to a buffer underwrite when constructing an ICMP reply packet. This occurs when using a non-standard value for the net.inet.icmp.quotelen sysctl.

Recommendations For versions prior to 11.2-STABLE(r340268) and 11.2-RELEASE-p5, update to a version that includes the fix for this issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-17156

Affected Products

Freebsd

References · 4

• 🔥 https://security.freebsd.org/advisories/FreeBSD-EN-18:13.icmp.asc · Exploit
• https://osv.dev/vulnerability/CVE-2018-17156 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-17156 · Security Note
• http://securityfocus.com/bid/106052 · Note