CVE-2022-22235 : What You Need to Know
Learn about CVE-2022-22235, an Improper Check for Unusual Conditions vulnerability in Juniper Networks Junos OS on SRX Series, allowing DoS attacks. Find out the impact, affected versions, and mitigation steps.
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). This issue affects Juniper Networks Junos OS on SRX Series: 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3-S3; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2; 22.1 versions prior to 22.1R1-S1, 22.1R2.
Understanding CVE-2022-22235
An explanation of the vulnerability, its impact, affected systems, and mitigations.
What is CVE-2022-22235?
CVE-2022-22235 is an Improper Check for Unusual or Exceptional Conditions vulnerability in Juniper Networks Junos OS on SRX Series, allowing DoS attacks.
The Impact of CVE-2022-22235
The vulnerability allows unauthenticated attackers to cause a Denial of Service by triggering a PFE crash through malformed GPRS traffic processing.
Technical Details of CVE-2022-22235
Detailed technical aspects of the vulnerability, affected systems, and how it can be exploited.
Vulnerability Description
A PFE crash occurs when a GTP packet with a malformed field in the IP header of GTP encapsulated GPRS traffic is received, causing DoS.
Affected Systems and Versions
Juniper Networks Junos OS on SRX Series: 20.2 to 22.1 versions are affected by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by an unauthenticated, network-based attacker triggering a PFE crash through malformed GPRS traffic.
Mitigation and Prevention
Methods to mitigate and prevent the exploitation of CVE-2022-22235.
Immediate Steps to Take
Disable the end-point-address-validated security feature as a temporary mitigation for this vulnerability.
Long-Term Security Practices
Ensure prompt software updates and adhere to security best practices to prevent similar vulnerabilities.
Patching and Updates
Update affected software versions to 20.2R3-S5, 20.3R3-S4, 20.4R3-S3, 21.1R3-S2, 21.2R3-S1, 21.3R3, 21.4R1-S2, 21.4R2, 22.1R1-S1, 22.1R2, 22.2R1, or later releases to address this vulnerability.