SB2022041363 - Resource exhaustion in Juniper Junos OS
Published: April 13, 2022
Security Bulletin ID
SB2022041363
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2022-22191)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
A Denial of Service (DoS) vulnerability in the processing of a flood of specific ARP traffic in Juniper Networks Junos OS on the EX4300 switch, sent from the local broadcast domain, may allow an unauthenticated network-adjacent attacker to trigger a PFEMAN watchdog timeout, causing the Packet Forwarding Engine (PFE) to crash and restart.
After the restart, transit traffic will be temporarily interrupted until the PFE is reprogrammed.
Remediation
Install update from vendor's website.