CVE-2023-1076 - Vulnerability Details - OpenCVE

A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux	Linux Kernel
Redhat	Enterprise Linux

Configuration 1 [-]

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Package	CPE	Advisory	Released Date
Red Hat Enterprise Linux 9
kernel-0:5.14.0-362.8.1.el9_3	cpe:/a:redhat:enterprise_linux:9	RHSA-2023:6583	2023-11-07T00:00:00Z
kernel-0:5.14.0-362.8.1.el9_3	cpe:/o:redhat:enterprise_linux:9	RHSA-2023:6583	2023-11-07T00:00:00Z

References

Link	Providers
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=66b2c338adce580dfce2199591e65e2bab889cff
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a096ccca6e503a5c575717ff8a36ace27510ab0a
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
https://nvd.nist.gov/vuln/detail/CVE-2023-1076
https://www.cve.org/CVERecord?id=CVE-2023-1076

History

Mon, 24 Feb 2025 17:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2023-03-27T00:00:00.000Z

Updated: 2025-02-24T17:04:30.565Z

Reserved: 2023-02-27T00:00:00.000Z

Link: CVE-2023-1076

Vulnrichment

Updated: 2024-08-02T05:32:46.361Z

NVD

Status : Modified

Published: 2023-03-27T21:15:10.423

Modified: 2025-02-24T17:15:12.320

Link: CVE-2023-1076

Redhat

Severity : Low

Publid Date: 2023-02-04T00:00:00Z

Links: CVE-2023-1076 - Bugzilla

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