CVE-2015-2923

MEDIUM

FreeBSD < 10.1 - Neighbor Discovery Hop-Limit Reconfiguration via Router Advertisement

Title source: llm
STIX 2.1

Description

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD through 10.1 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.

References (4)

Core 4
Core References
Mailing List, Third Party Advisory x_refsource_misc
http://openwall.com/lists/oss-security/2015/04/04/2
Mailing List, Vendor Advisory x_refsource_misc
https://lists.freebsd.org/pipermail/freebsd-net/2015-April/041934.html
Mitigation, Vendor Advisory x_refsource_misc
https://www.freebsd.org/security/advisories/FreeBSD-SA-15:09.ipv6.asc

Scores

CVSS v3 6.5
EPSS 0.0138
EPSS Percentile 80.5%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (1)
freebsd/freebsd < 10.1
Published Feb 20, 2020
Tracked Since Feb 18, 2026