The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA75723 advisory.

  - An Improper Handling of Exceptional Conditions vulnerability in BGP session processing of Juniper Networks     Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker, using specific timing     outside the attacker's control, to flap BGP sessions and cause the routing protocol daemon (rpd) process     to crash and restart, leading to a Denial of Service (DoS) condition. Continued BGP session flapping will     create a sustained Denial of Service (DoS) condition. This issue only affects routers configured with non-     stop routing (NSR) enabled. Graceful Restart (GR) helper mode, enabled by default, is also required for     this issue to be exploitable. Note: NSR is not supported on the SRX Series and is therefore not affected     by this vulnerability. When the BGP session flaps on the NSR-enabled router, the device enters GR-     helper/LLGR-helper mode due to the peer having negotiated GR/LLGR-restarter capability and the backup BGP     requests for replication of the GR/LLGR-helper session, master BGP schedules, and initiates replication of     GR/LLGR stale routes to the backup BGP. In this state, if the BGP session with the BGP peer comes up     again, unsolicited replication is initiated for the peer without cleaning up the ongoing GR/LLGR-helper     mode replication. This parallel two instances of replication for the same peer leads to the assert if the     BGP session flaps again. This issue affects: Juniper Networks Junos OS * All versions earlier than     20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions     earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; *     22.3 versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R2-S2, 22.4R3; * 23.2 versions     earlier than 23.2R1-S1, 23.2R2. Juniper Networks Junos OS Evolved * All versions earlier than     21.3R3-S5-EVO; * 21.4 versions earlier than 21.4R3-S5-EVO; * 22.1 versions earlier than 22.1R3-S4-EVO; *     22.2 versions earlier than 22.2R3-S3-EVO; * 22.3 versions earlier than 22.3R3-S1-EVO; * 22.4 versions     earlier than 22.4R2-S2-EVO, 22.4R3-EVO; * 23.2 versions earlier than 23.2R1-S1-EVO, 23.2R2-EVO.
    (CVE-2024-21585)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

Juniper Junos OS Vulnerability (JSA75723)

medium Nessus Plugin ID 189740

Version 1.1

Version 1.0

Version 1.1 Nov 26, 2024, 7:03 PM Detection (updating constraints for EVO versions) Plugin Feed: 202411261903
Version 1.0 Jan 29, 2024, 6:10 PM New Plugin Feed: 202401291810