Junos OS: SRX Series: If no-syn-check is enabled, traffic classified as UNKNOWN gets permitted by pre-id-default-policy (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.67 % · percentile 52 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
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.
Weaknesses (CWE)
- CWE-863 — Incorrect Authorization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | juniper |
| CVSS 3.1 | HIGH 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | NVD · sirt@juniper.net (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2022-27314
- GCVE · GCVE-0-2022-22167
CERT-FR advisories
- CERTFR-2022-AVI-040 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r2-s2:*:*:*:*:*:*- +93 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 18.4 < 18.4R2-S10, 18.4R3-S10 ; affected 19.1 < 19.1R3-S8 ; affected 19.2 < 19.2R1-S8, 19.2R3-S4 ; affected 19.3 < 19.3R3-S3 ; affected 19.4 < 19.4R3-S5 ; affected 20.1 < 20.1R3-S1 |
| Juniper Networks · Junos OS | unaffected unspecified < 18.4R1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |