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cvelistZdiCVELIST:CVE-2021-34999
HistoryMay 07, 2024 - 10:54 p.m.

CVE-2021-34999 OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability

2024-05-0722:54:51
CWE-908
zdi
www.cve.org
openbsd
multicast routing
information disclosure
vulnerability
low-privileged code

3.8 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

4.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

28.8%

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.

CNA Affected

[
  {
    "vendor": "OpenBSD",
    "product": "Kernel",
    "versions": [
      {
        "version": "R.47.0.0 AutoCAD 2021 & R.47.0.0 AutoCAD LT 2021",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

3.8 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

4.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

28.8%

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