PT-2024-1136 · Juniper Networks · Junos+1

Published

2024-01-10

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Updated

2024-01-31

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CVE-2024-21585

CVSS v3.1

5.9

Medium

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions prior to 20.4R3-S9 Juniper Networks Junos OS versions 21.2 prior to 21.2R3-S7 Juniper Networks Junos OS versions 21.3 prior to 21.3R3-S5 Juniper Networks Junos OS versions 21.4 prior to 21.4R3-S5 Juniper Networks Junos OS versions 22.1 prior to 22.1R3-S4 Juniper Networks Junos OS versions 22.2 prior to 22.2R3-S3 Juniper Networks Junos OS versions 22.3 prior to 22.3R3-S1 Juniper Networks Junos OS versions 22.4 prior to 22.4R2-S2, 22.4R3 Juniper Networks Junos OS versions 23.2 prior to 23.2R1-S1, 23.2R2 Juniper Networks Junos OS Evolved versions prior to 21.3R3-S5-EVO Juniper Networks Junos OS Evolved versions 21.4 prior to 21.4R3-S5-EVO Juniper Networks Junos OS Evolved versions 22.1 prior to 22.1R3-S4-EVO Juniper Networks Junos OS Evolved versions 22.2 prior to 22.2R3-S3-EVO Juniper Networks Junos OS Evolved versions 22.3 prior to 22.3R3-S1-EVO Juniper Networks Junos OS Evolved versions 22.4 prior to 22.4R2-S2-EVO, 22.4R3-EVO Juniper Networks Junos OS Evolved versions 23.2 prior to 23.2R1-S1-EVO, 23.2R2-EVO
Description An Improper Handling of Exceptional Conditions vulnerability in BGP session processing allows an unauthenticated network-based attacker to flap BGP sessions and cause the routing protocol daemon process to crash and restart, leading to a Denial of Service condition. This issue only affects routers configured with non-stop routing enabled and Graceful Restart helper mode. When the BGP session flaps on the affected router, the device enters GR-helper mode, and if the BGP session comes up again, unsolicited replication is initiated without cleaning up the ongoing GR-helper mode replication, leading to an assert if the BGP session flaps again.
Recommendations For Juniper Networks Junos OS versions prior to 20.4R3-S9, update to version 20.4R3-S9 or later. For Juniper Networks Junos OS versions 21.2 prior to 21.2R3-S7, update to version 21.2R3-S7 or later. For Juniper Networks Junos OS versions 21.3 prior to 21.3R3-S5, update to version 21.3R3-S5 or later. For Juniper Networks Junos OS versions 21.4 prior to 21.4R3-S5, update to version 21.4R3-S5 or later. For Juniper Networks Junos OS versions 22.1 prior to 22.1R3-S4, update to version 22.1R3-S4 or later. For Juniper Networks Junos OS versions 22.2 prior to 22.2R3-S3, update to version 22.2R3-S3 or later. For Juniper Networks Junos OS versions 22.3 prior to 22.3R3-S1, update to version 22.3R3-S1 or later. For Juniper Networks Junos OS versions 22.4 prior to 22.4R2-S2, 22.4R3, update to version 22.4R2-S2, 22.4R3 or later. For Juniper Networks Junos OS versions 23.2 prior to 23.2R1-S1, 23.2R2, update to version 23.2R1-S1, 23.2R2 or later. For Juniper Networks Junos OS Evolved versions prior to 21.3R3-S5-EVO, update to version 21.3R3-S5-EVO or later. For Juniper Networks Junos OS Evolved versions 21.4 prior to 21.4R3-S5-EVO, update to version 21.4R3-S5-EVO or later. For Juniper Networks Junos OS Evolved versions 22.1 prior to 22.1R3-S4-EVO, update to version 22.1R3-S4-EVO or later. For Juniper Networks Junos OS Evolved versions 22.2 prior to 22.2R3-S3-EVO, update to version 22.2R3-S3-EVO or later. For Juniper Networks Junos OS Evolved versions 22.3 prior to 22.3R3-S1-EVO, update to version 22.3R3-S1-EVO or later. For Juniper Networks Junos OS Evolved versions 22.4 prior to 22.4R2-S2-EVO, 22.4R3-EVO, update to version 22.4R2-S2-EVO, 22.4R3-EVO or later. For Juniper Networks Junos OS Evolved versions 23.2 prior to 23.2R1-S1-EVO, 23.2R2-EVO, update to version 23.2R1-S1-EVO, 23.2R2-EVO or later.

Fix

DoS

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

BDU:2024-00449
CVE-2024-21585

Affected Products

Junos
Junos Evolved