SB2021033033 - Denial of service in Linux netfilter

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Main Vulnerability Database SB2021033033

SB2021033033 - Denial of service in Linux netfilter

Published: March 30, 2021 Updated: September 1, 2021

Security Bulletin ID SB2021033033
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Buffer overflow (CVE-ID: CVE-2021-29650)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the netfilter subsystem in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h. A local user can trigger memory corruption upon the assignment of a new table value and cause denial of service.


Remediation

Install update from vendor's website.

References