What is the severity of ZDI-22-073?

The severity of ZDI-22-073 is considered to be high due to its potential to disclose sensitive information.

How do I fix ZDI-22-073?

To fix ZDI-22-073, ensure that your OpenBSD Kernel is updated to the latest version that addresses this vulnerability.

What type of attacks can exploit ZDI-22-073?

ZDI-22-073 can be exploited by local attackers who have the ability to execute low-privileged code on the target system.

What version of OpenBSD does ZDI-22-073 affect?

ZDI-22-073 affects installations of the OpenBSD Kernel.

Can ZDI-22-073 be exploited remotely?

No, ZDI-22-073 requires local access to the system to exploit the vulnerability.

Vulnerability/
ZDI-22-073

low

3.8

29/1/2025

ZDI-22-073: OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability

This vulnerability 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 vulnerability. The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.

Affected Software	Affected Version	How to fix
OpenBSD

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Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-22-073/

Frequently Asked Questions

What is the severity of ZDI-22-073?
The severity of ZDI-22-073 is considered to be high due to its potential to disclose sensitive information.
How do I fix ZDI-22-073?
To fix ZDI-22-073, ensure that your OpenBSD Kernel is updated to the latest version that addresses this vulnerability.
What type of attacks can exploit ZDI-22-073?
ZDI-22-073 can be exploited by local attackers who have the ability to execute low-privileged code on the target system.
What version of OpenBSD does ZDI-22-073 affect?
ZDI-22-073 affects installations of the OpenBSD Kernel.
Can ZDI-22-073 be exploited remotely?
No, ZDI-22-073 requires local access to the system to exploit the vulnerability.

agent/severity
agent/title
agent/references
agent/softwarecombine
agent/type
agent/description
agent/event
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-22-073
alias/ZDI-CAN-14540
alias/CVE-2021-34999
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/openbsd
canonical/openbsd

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Frequently Asked Questions

What is the severity of ZDI-22-073?
The severity of ZDI-22-073 is considered to be high due to its potential to disclose sensitive information.
How do I fix ZDI-22-073?
To fix ZDI-22-073, ensure that your OpenBSD Kernel is updated to the latest version that addresses this vulnerability.
What type of attacks can exploit ZDI-22-073?
ZDI-22-073 can be exploited by local attackers who have the ability to execute low-privileged code on the target system.
What version of OpenBSD does ZDI-22-073 affect?
ZDI-22-073 affects installations of the OpenBSD Kernel.
Can ZDI-22-073 be exploited remotely?
No, ZDI-22-073 requires local access to the system to exploit the vulnerability.