CVE-2021-34999 OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability
Local attackers can disclose sensitive kernel memory via uninitialized memory in multicast routing, potentially aiding privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34999?
CVE-2021-34999 is a low-severity vulnerability in Openbsd Openbsd, published on 7 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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. . Was ZDI-CAN-14540.
Weakness: CWE-908
Which versions are affected by CVE-2021-34999?
It affects 1 product.
Products include Openbsd Openbsd.
How do I fix CVE-2021-34999?
No fix has been published for CVE-2021-34999 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34999 being exploited?
There is no known exploitation of CVE-2021-34999 in the wild and no public exploit code.
Other vulnerabilities in Openbsd Openbsd
Sources
Also known as GHSA-j6vv-mv3c-q6jp.