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).
A PFE crash will happen when a GPRS Tunnel Protocol (GTP) packet is received with a malformed field in the IP header of GTP encapsulated General Packet Radio Services (GPRS) traffic. The packet needs to match existing state which is outside the attackers control, so the issue cannot be directly exploited. The issue will only be observed when endpoint address validation is enabled.
This issue affects Juniper Networks Junos OS:
This issue does not affect Juniper Networks Junos OS versions prior to 20.2R1.
A device can only be affected by this vulnerability if the following configuration is present:
[security gtp profile <profile> end-user-address-validated]
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2022-22235.
The following software releases have been updated to resolve this specific issue: 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, and all subsequent releases.
This issue is being tracked as PR 1634396 which is visible on the Customer Support website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
Software Releases, patches and updates are available at https://support.juniper.net/support/downloads/.