CVE-2022-27882 json
slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a c…
published 2022-03-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32370
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.
Patch / fix
Exploit prediction
1.91% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.quarkslab.com https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-681 Incorrect Conversion between Numeric Types
References
-
ftp.openbsd.org
/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig
patch, release-notes, vendor-advisory
-
ftp.openbsd.org
/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig
patch, release-notes, vendor-advisory
-
blog.quarkslab.com
/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html
exploit, third-party-advisory
-
security.netapp.com
/advisory/ntap-20220506-0005/
third-party-advisory
Sources
- CVE List CVE-2022-27882
- NVD CVE-2022-27882
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