CVE-2022-22226 Explained : Impact and Mitigation
Learn about CVE-2022-22226, an Uncontrolled Memory Allocation vulnerability in Juniper Networks Junos OS in VxLAN scenarios, potentially leading to Denial of Service (DoS) attacks. Find out impact, technical details, mitigation steps, and solutions.
An Uncontrolled Memory Allocation vulnerability in Juniper Networks Junos OS in VxLAN scenarios on EX4300-MP, EX4600, QFX5000 Series devices can lead to a Denial of Service (DoS) condition. Learn about the impact, technical details, mitigation steps, and solutions.
Understanding CVE-2022-22226
In VxLAN scenarios specific packets processed cause a memory leak leading to a PFE crash in Junos OS.
What is CVE-2022-22226?
Junos OS vulnerability allows an attacker to trigger a DoS condition by crashing one or more PFE's, potentially creating a sustained DoS condition.
The Impact of CVE-2022-22226
The vulnerability affects Juniper Networks Junos OS on specific versions of EX4300-MP, EX4600, QFX5000 Series, potentially allowing unauthenticated adjacent attackers to disrupt services.
Technical Details of CVE-2022-22226
Vulnerability Description
The Uncontrolled Memory Allocation flaw in Junos OS permits attackers to crash PFE's, causing a DoS situation and memory leak upon automatic restart.
Affected Systems and Versions
The vulnerability impacts Junos OS versions ranging from 17.1 to 20.3 on EX4300-MP, EX4600, QFX5000 Series devices.
Exploitation Mechanism
By sending specific packets in VxLAN scenarios, unauthenticated nearby attackers can exploit the vulnerability, potentially leading to a sustained DoS situation.
Mitigation and Prevention
Immediate Steps to Take
Ensure your system is updated with the patched software versions to mitigate the risk of exploitation of CVE-2022-22226.
Long-Term Security Practices
Regularly monitor and apply software updates to protect against emerging vulnerabilities in Juniper Networks Junos OS.
Patching and Updates
Update to the following software releases to address this issue: 17.3R3-S12, 17.4R2-S13, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R1-S8, 18.4R2-S6, 18.4R3-S6, 19.1R3-S4, 19.2R1-S7, 19.2R3-S1, 19.3R2-S6, 19.3R3-S1, 19.4R1-S4, 19.4R2-S4, 19.4R3-S1, 20.1R2, 20.2R2-S3, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases.