In an MPLS P2MP environment a Loop with Unreachable Exit Condition vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause high load on RPD which in turn may lead to routing protocol flaps. If a system with sensor-based-stats enabled receives a specific LDP FEC this can lead to the above condition. Continued receipted of such an LDP FEC will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 version 19.2R2 and later versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S2, 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R2. Juniper Networks Junos OS Evolved All versions prior to 20.1R2-S3-EVO; 20.3 versions prior to 20.3R1-S2-EVO.
References
| Link | Resource |
|---|---|
| https://kb.juniper.net/JSA11225 | Patch Vendor Advisory |
| https://kb.juniper.net/JSA11225 | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
21 Nov 2024, 06:05
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://kb.juniper.net/JSA11225 - Patch, Vendor Advisory |
Information
Published : 2021-10-19 19:15
Updated : 2024-11-21 06:05
NVD link : CVE-2021-31363
Mitre link : CVE-2021-31363
CVE.ORG link : CVE-2021-31363
JSON object : View
Products Affected
juniper
- junos
- junos_os_evolved
CWE
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')