VulnerabilityModified
CVE-2022-27881
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.
HIGH 7.5EPSS 1.90%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.90%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.90% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- openbsd/openbsd
- Source
- cve@mitre.org
References
- https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.htmlExploit, Patch, Third Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sigPatch, Release Notes, Vendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sigPatch, Release Notes, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220506-0005/Third Party Advisory
- https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.htmlExploit, Patch, Third Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sigPatch, Release Notes, Vendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sigPatch, Release Notes, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220506-0005/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.