PT-2022-18664 · Openbsd · Openbsd

Francisco Falcon · Published 2022-03-25 · Updated 2022-05-12 · CVE-2022-27882

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenBSD versions 6.9 through 7.0 before 2022-03-22

Description The issue is caused by an integer signedness error and resultant heap-based buffer overflow in the slaacd component of OpenBSD. This can be triggered by a crafted IPv6 router advertisement. It is noted that privilege separation and pledge can prevent exploitation.

Recommendations For OpenBSD versions 6.9 through 7.0 before 2022-03-22, consider applying privilege separation and pledge to prevent exploitation until a patch is available.

Exploit

Fix

Weakness Enumeration

CWE-681

Related Identifiers

CVE-2022-27882

Affected Products

Openbsd

References · 6

• 🔥 https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html · Exploit
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig · Vendor Advisory
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-27882 · Security Note
• https://osv.dev/vulnerability/CVE-2022-27882 · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20220506-0005 · Note