Description
engine.c in slaacd in OpenBSD 6.9 and 7.0 before 2022-02-21 has a buffer overflow triggerable by an IPv6 router advertisement with more than seven nameservers. NOTE: privilege separation and pledge can prevent exploitation.
References (4)
Core 4
Core References
Patch, Release Notes, Vendor Advisory x_refsource_misc
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sig
Exploit, Patch, Third Party Advisory x_refsource_misc
https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
Patch, Release Notes, Vendor Advisory x_refsource_misc
https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sig
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20220506-0005/
Scores
CVSS v3
7.5
EPSS
0.0108
EPSS Percentile
78.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-120
Status
published
Products (2)
openbsd/openbsd
6.9
openbsd/openbsd
7.0
Published
Mar 25, 2022
Tracked Since
Feb 18, 2026