Vulnerability Monitor

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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. NOTE: privilege separation and pledge can prevent exploitation.

Published

2022-03-25T18:15:27.617

Last Modified

2024-11-21T06:56:24.237

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-120

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openbsd	openbsd	6.9	Yes
Application	openbsd	openbsd	7.0	Yes

References

https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html Exploit, Patch, Third Party Advisory ([email protected])
https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sig Patch, Release Notes, Vendor Advisory ([email protected])
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sig Patch, Release Notes, Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20220506-0005/ Third Party Advisory ([email protected])
https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/030_slaacd.patch.sig Patch, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/014_slaacd.patch.sig Patch, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20220506-0005/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)