SB2021071510 - Denial of service in Juniper Junos OS enhanced storm control feature
Published: July 15, 2021
Security Bulletin ID
SB2021071510
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security features bypass (CVE-ID: CVE-2021-0294)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect implementation of the storm-control enhanced feature. A remote attacker can cause high CPU usage or packet loss issues by sending a large amount of broadcast or unknown unicast packets arriving the device.
The vulnerability affects QFX5000 Series and EX4600 Series.
Remediation
Install update from vendor's website.