SB2021111721 - Remote code execution in Linux kernel TIPC

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Main Vulnerability Database SB2021111721

SB2021111721 - Remote code execution in Linux kernel TIPC

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

Security Bulletin ID SB2021111721
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Buffer overflow (CVE-ID: CVE-2021-43267)

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 update from vendor's website.

References