CVE-2022-22193 : Security Advisory and Response
Learn about CVE-2022-22193, an Improper Handling of Unexpected Data Type vulnerability in Juniper Networks Junos OS and Junos OS Evolved, enabling DoS attacks. Discover the impact, affected systems, and mitigation steps.
An Improper Handling of Unexpected Data Type vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker to cause a Denial of Service (DoS) attack. This vulnerability can be exploited when a certain CLI command is executed in a BGP rib-sharding scenario.
Understanding CVE-2022-22193
In this section, we will delve deeper into the details of CVE-2022-22193.
What is CVE-2022-22193?
CVE-2022-22193 is an Improper Handling of Unexpected Data Type vulnerability in Juniper Networks Junos OS and Junos OS Evolved, allowing a locally authenticated attacker to trigger a Denial of Service (DoS) attack.
The Impact of CVE-2022-22193
The exploitation of CVE-2022-22193 can lead to a sustained Denial of Service condition, causing a crash in the rpd process, impacting routing protocols, and potentially leading to traffic disruptions.
Technical Details of CVE-2022-22193
Let's explore the technical aspects of CVE-2022-22193 in detail.
Vulnerability Description
The vulnerability arises due to improper handling of unexpected data types in the rpd of Junos OS and Junos OS Evolved, allowing attackers with low privileges to exploit the issue.
Affected Systems and Versions
Affected versions include Juniper Networks Junos OS 20.3-21.2 and Junos OS Evolved 20.4-21.2, while versions prior to 20.3R1 remain unaffected.
Exploitation Mechanism
Exploitation requires a locally authenticated attacker to execute a specific CLI command in a BGP rib-sharing scenario, triggering a crash in the rpd process.
Mitigation and Prevention
Discover the measures to mitigate and prevent the impact of CVE-2022-22193.
Immediate Steps to Take
Ensure you update to the patched versions: Junos OS Evolved 20.4R3-EVO, 21.1R3-EVO, 21.2R2-EVO, 21.3R1-EVO, and all subsequent releases; Junos OS 20.3R3-S1, 20.4R3, 21.1R3, 21.2R2, 21.3R1, and all subsequent releases.
Long-Term Security Practices
Refrain from executing unknown or suspicious CLI commands to mitigate the risk of exploitation.
Patching and Updates
Regularly update your Juniper Networks Junos OS and Junos OS Evolved to the latest available versions.