Vulnerability in Openbsd Kernel
CVE-2021-34999
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.
EPSS: 0.002 (15.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Openbsd Kernel — versions OpenBSD 6.9
- Openbsd — versions 6.9
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34999?
- CVE-2021-34999 is a medium-severity vulnerability in Openbsd Kernel, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2024-05-07.
- How severe is CVE-2021-34999?
- Medium severity. CVSS v3 base score is 5.5 out of 10.