SB2021071526 - Denial of service in Junos OS Ethernet interface frame processing

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021071526

SB2021071526 - Denial of service in Junos OS Ethernet interface frame processing

Published: July 15, 2021

Security Bulletin ID SB2021071526
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2021-0290)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions in Ethernet interface frame processing. A remote attacker on the local network can send specially crafted frames over the local Ethernet segment, causing the interface to go into a down state, resulting in a Denial of Service (DoS) condition.

This issue is platform-specific and affects the following platforms and line cards:

  • MPC7E/8E/9E and MPC10E on MX240, MX480, MX960, MX2008, MX2010, and MX2020
  • MX204, MX10003, MX10008, MX10016
  • EX9200, EX9251
  • SRX4600

Remediation

Install update from vendor's website.

References