title: Junos OS and Junos OS Evolved: RPD might crash when MPLS ping is performed on BGP LSPs
description: An Access of Uninitialized Pointer vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause a Denial of Service (DoS). When an MPLS ping is performed on BGP LSPs, the RPD might crash. Repeated execution of this operation will lead to a sustained DoS. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S12; 19.1 versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R1-S9, 19.2R3-S5; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R2-S7, 19.4R3-S8; 20.1 versions prior to 20.1R3-S4; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R1-S1, 21.1R2; Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R2-EVO.
problem types: CWE-824 Access of Uninitialized Pointer
affected:
{
vendor: Juniper Networks
product: Junos OS
versions:
version: 15.1, status: affected, lessThan: 15.1R7-S12, versionType: custom
version: 19.1, status: affected, lessThan: 19.1R3-S9, versionType: custom
version: 19.2, status: affected, lessThan: 19.2R1-S9, 19.2R3-S5, versionType: custom
version: 19.3, status: affected, lessThan: 19.3R3-S6, versionType: custom
version: 19.4, status: affected, lessThan: 19.4R2-S7, 19.4R3-S8, versionType: custom
version: 20.1, status: affected, lessThan: 20.1R3-S4, versionType: custom
version: 20.2, status: affected, lessThan: 20.2R3-S5, versionType: custom
version: 20.3, status: affected, lessThan: 20.3R3-S5, versionType: custom
version: 20.4, status: affected, lessThan: 20.4R3-S4, versionType: custom
version: 21.1, status: affected, lessThan: 21.1R1-S1, 21.1R2, versionType: custom
}
{
vendor: Juniper Networks
product: Junos OS Evolved
versions:
version: unspecified, lessThan: 20.4R3-S4-EVO, status: affected, versionType: custom
version: 21.1, status: affected, lessThan: 21.1R2-EVO, versionType: custom
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: ADJACENT_NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 5.3
baseSeverity: MEDIUM
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue:
Junos OS: 15.1R7-S12, 19.1R3-S9, 19.2R1-S9, 19.2R3-S5, 19.3R3-S6, 19.4R2-S7, 19.4R3-S8, 20.1R3-S4, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R1-S1, 21.1R2, 21.2R1, and all subsequent releases.
Junos OS Evolved: 20.4R3-S4-EVO, 21.1R2-EVO, 21.2R1-EVO and all subsequent releases.
workarounds: There are no known workarounds for this issue.
To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted networks, hosts and users.