An Improper Handling of Unexpected Data Type vulnerability in IPv6 firewall filter processing of Juniper Networks Junos OS on the ACX Series devices will prevent a firewall filter with the term 'from next-header ah' from being properly installed in the packet forwarding engine (PFE). There is no immediate indication of an incomplete firewall filter commit shown at the CLI, which could allow an attacker to send valid packets to or through the device that were explicitly intended to be dropped. An indication that the filter was not installed can be identified with the following logs: fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_rule_prepare : Config failed: Unsupported Ip-protocol 51 in the filter lo0.0-inet6-i fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_rule_prepare : Please detach the filter, remove unsupported match and re-attach fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_process_rule : Status:104 dnx_dfw_rule_prepare failed fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_process_filter : Status:104 dnx_dfw_process_rule failed fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_update_filter_in_hw : Status:104 Could not process filter(lo0.0-inet6-i) for rule expansion Unsupported match, action present. fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_create_hw_instance : Status:104 Could not program dfw(lo0.0-inet6-i) type(IFP_DFLT_INET6_Lo0_FILTER)! [104] fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_bind_shim : [104] Could not create dfw(lo0.0-inet6-i) type(IFP_DFLT_INET6_Lo0_FILTER) fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_update_resolve : [100] Failed to bind filter(3) to bind point fpc0 ACX_DFW_CFG_FAILED: ACX Error (dfw):dnx_dfw_change_end : dnx_dfw_update_resolve (resolve type) failed This issue affects Juniper Networks Junos OS on ACX Series: All versions prior to 20.2R3-S7; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 20 products from juniper, from juniper, from juniper and 17 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2023-04-17T22:15:08.457
2024-11-21T07:56:17.437
Modified
CVSSv3.1: 5.8 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos | < 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.2 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 20.4 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.1 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.2 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.3 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 21.4 | Yes |
| Operating System | juniper | junos | 22.1 | Yes |
| Operating System | juniper | junos | 22.1 | Yes |
| Operating System | juniper | junos | 22.1 | Yes |
| Hardware | juniper | acx1000 | - | No |
| Hardware | juniper | acx1100 | - | No |
| Hardware | juniper | acx2000 | - | No |
| Hardware | juniper | acx2100 | - | No |
| Hardware | juniper | acx2200 | - | No |
| Hardware | juniper | acx4000 | - | No |
| Hardware | juniper | acx500 | - | No |
| Hardware | juniper | acx5000 | - | No |
| Hardware | juniper | acx5048 | - | No |
| Hardware | juniper | acx5096 | - | No |
| Hardware | juniper | acx5400 | - | No |
| Hardware | juniper | acx5448 | - | No |
| Hardware | juniper | acx5800 | - | No |
| Hardware | juniper | acx6300 | - | No |
| Hardware | juniper | acx6360 | - | No |
| Hardware | juniper | acx710 | - | No |
| Hardware | juniper | acx7100-32c | - | No |
| Hardware | juniper | acx7100-48l | - | No |
| Hardware | juniper | acx7509 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.