An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific BGP update, causing the routing protocol daemon (RPD) to crash and restart, leading to a Denial of Service (DoS). Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and later, prior to 20.2R3-S2; 20.3 versions 20.3R2 and later, prior to 20.3R3; 20.4 versions 20.4R2 and later, prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS 20.1 is not affected by this issue. This issue also affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO, 20.4R3-EVO; 21.1-EVO versions prior to 21.1R2-EVO; 21.2-EVO versions prior to 21.2R2-EVO.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, 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 and availability (service disruption) for affected systems. Impacting 2 products from juniper, from juniper organizations running these solutions should prioritize assessment and patching.
Reported in 2021, 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.
2021-10-19T19:15:08.720
2024-11-21T06:05:29.003
Modified
CVSSv3.1: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos | 19.3 | Yes |
| Operating System | juniper | junos | 19.4 | 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 | 20.3 | Yes |
| Operating System | juniper | junos | 20.3 | 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_os_evolved | ≤ 20.3 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 20.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.1 | Yes |
| Operating System | juniper | junos_os_evolved | 21.1 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
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.