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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-4194 Detail

Description

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://access.redhat.com/errata/RHSA-2023:6583 Third Party Advisory 
https://access.redhat.com/security/cve/CVE-2023-4194 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2229498 Issue Tracking  Third Party Advisory 
https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/ Mailing List  Patch  Vendor Advisory 
https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/ Mailing List  Patch  Vendor Advisory 
https://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com/ Mailing List  Patch  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization cwe source acceptance level NIST   Red Hat, Inc.  
CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

15 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-4194
NVD Published Date:
08/07/2023
NVD Last Modified:
09/06/2024
Source:
Red Hat, Inc.