#VU58209 Buffer overflow in Linux kernel - CVE-2021-43267

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Main Vulnerability Database Vulnerabilities #VU58209

#VU58209 Buffer overflow in Linux kernel - CVE-2021-43267

Published: November 17, 2021 / Updated: October 23, 2022


Vulnerability identifier: #VU58209
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-43267
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability: Public exploit is available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in net/tipc/crypto.c in the Linux kernel. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.

A remote attacker can send specially crafted MSG_CRYPTO messages to the affected system, trigger memory corruption and execute arbitrary code on the system.


Remediation

Install updates from vendor's website.

External links