What is CVE-2022-27881?

CVE-2022-27881 is a high-severity vulnerability in Openbsd, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-03-25.

How severe is CVE-2022-27881?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Openbsd

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.

Vulnerability class: Buffer Overflow

EPSS: 0.019 (77.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openbsd — versions 6.9, 7.0
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Patch, x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Patch, x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2022-27881?: CVE-2022-27881 is a high-severity vulnerability in Openbsd, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-03-25.
How severe is CVE-2022-27881?: High severity. CVSS v3 base score is 7.5 out of 10.