CVE-2022-27881
HIGH severity · CVSS 7.5 · Buffer overflow
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html ↗
Additional information
- NVD record
- https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.htmlPatch
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sigPatch
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sigPatch
- https://security.netapp.com/advisory/ntap-20220506-0005/Advisory