A traffic classification vulnerability in Juniper Networks Junos OS on the SRX Series Services Gateways may allow an attacker to bypass Juniper Deep Packet Inspection (JDPI) rules and access unauthorized networks or resources, when 'no-syn-check' is enabled on the device. While JDPI correctly classifies out-of-state asymmetric TCP flows as the dynamic-application UNKNOWN, this classification is not provided to the policy module properly and hence traffic continues to use the pre-id-default-policy, which is more permissive, causing the firewall to allow traffic to be forwarded that should have been denied. This issue only occurs when 'set security flow tcp-session no-syn-check' is configured on the device. This issue affects Juniper Networks Junos OS on SRX Series: 18.4 versions prior to 18.4R2-S10, 18.4R3-S10; 19.1 versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R2-S2, 20.4R3; 21.1 versions prior to 21.1R2-S2, 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1.
References
Link Resource
https://kb.juniper.net/JSA11265 Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: juniper

Published: 2022-01-12T00:00:00

Updated: 2022-01-19T00:21:12

Reserved: 2021-12-21T00:00:00


Link: CVE-2022-22167

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2022-01-19T01:15:08.907

Modified: 2022-01-28T17:37:13.657


Link: CVE-2022-22167

JSON object: View

cve-icon Redhat Information

No data.

CWE