PT-2022-10381 · Openbsd · Openbsd Kernel

Reno Robert · Published 2022-01-13 · Updated 2025-08-14 · CVE-2021-34999

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenBSD Kernel (affected versions not specified)

Description This issue allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this issue. The specific flaw exists within the implementation of multicast routing, resulting from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other issues to escalate privileges and execute arbitrary code in the context of the kernel.

Recommendations At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

CVE-2021-34999

ZDI-22-073

Affected Products

Openbsd Kernel

References · 5

• https://zerodayinitiative.com/advisories/ZDI-22-073 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34999 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34999 · Vendor Advisory
• https://t.me/cveNotify/132191 · Telegram Post
• https://twitter.com/CVEnew/status/1788295939314393316 · Twitter Post