What is CVE-2022-27882?

CVE-2022-27882 is a vulnerability in slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 that allows a crafted IPv6 router advertisement to trigger a heap-based buffer overflow.

What is the severity of CVE-2022-27882?

CVE-2022-27882 has a severity rating of 7.5 out of 10, which is considered high.

How can CVE-2022-27882 be exploited?

CVE-2022-27882 can be exploited by sending a crafted IPv6 router advertisement to the vulnerable slaacd service.

How can I prevent exploitation of CVE-2022-27882?

Enabling privilege separation and pledge can help prevent exploitation of CVE-2022-27882.

Where can I find more information about CVE-2022-27882?

You can find more information about CVE-2022-27882 in the reference links provided: [1](https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html), [2](https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig), [3](https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig).

Vulnerability/
CVE-2022-27882

high

7.5

CWE

681 119

25/3/2022

3/8/2024

CVE-2022-27882: Buffer Overflow

First published: Fri Mar 25 2022(Updated: )

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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Openbsd Openbsd	=6.9
Openbsd Openbsd	=7.0

Remedy

https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig

Remedy

https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig

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Reference Links

Frequently Asked Questions

What is CVE-2022-27882?
CVE-2022-27882 is a vulnerability in slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 that allows a crafted IPv6 router advertisement to trigger a heap-based buffer overflow.
What is the severity of CVE-2022-27882?
CVE-2022-27882 has a severity rating of 7.5 out of 10, which is considered high.
How can CVE-2022-27882 be exploited?
CVE-2022-27882 can be exploited by sending a crafted IPv6 router advertisement to the vulnerable slaacd service.
How can I prevent exploitation of CVE-2022-27882?
Enabling privilege separation and pledge can help prevent exploitation of CVE-2022-27882.
Where can I find more information about CVE-2022-27882?
You can find more information about CVE-2022-27882 in the reference links provided: [1](https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html), [2](https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig), [3](https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig).

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vendor/openbsd
canonical/openbsd openbsd
version/openbsd openbsd/6.9
version/openbsd openbsd/7.0

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