title: Junos OS and Junos OS Evolved: In a MoFRR scenario an rpd core may be observed when a low privileged CLI command is executed
description: A Use of an Uninitialized Resource vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with low privileges to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved platforms, in a Multicast only Fast Reroute (MoFRR) scenario, the rpd process can crash when a a specific low privileged CLI command is executed. The rpd crash will impact all routing protocols until the process has automatically been restarted. As the operational state which makes this issue exploitable is outside the attackers control, this issue is considered difficult to exploit. Continued execution of this command will lead to a sustained DoS.
This issue affects:
Juniper Networks Junos OS
19.4 version 19.4R3-S5 and later versions prior to 19.4R3-S9;
20.1 version 20.1R2 and later versions;
20.2 versions prior to 20.2R3-S7;
20.3 versions prior to 20.3R3-S5;
20.4 versions prior to 20.4R3-S6;
21.1 versions prior to 21.1R3-S4;
21.2 versions prior to 21.2R3-S2;
21.3 versions prior to 21.3R3-S1;
21.4 versions prior to 21.4R3;
22.1 versions prior to 22.1R1-S2, 22.1R2;
22.2 versions prior to 22.2R2.
Juniper Networks Junos OS Evolved
All versions prior to 20.4R3-S6-EVO;
21.1-EVO version 21.1R1-EVO and later versions;
21.2-EVO version 21.2R1-EVO and later versions;
21.3-EVO versions prior to 21.3R3-S1-EVO;
21.4-EVO versions prior to 21.4R3-EVO;
22.1-EVO versions prior to 22.1R1-S2-EVO, 22.1R2-EVO;
22.2-EVO versions prior to 22.2R2-EVO.
problem types: CWE-908 Use of Uninitialized Resource
affected:
{
defaultStatus: unaffected
product: Junos OS
vendor: Juniper Networks
versions:
changes: [at: 19.4R3-S9, status: unaffected], lessThan: 19.4*, status: affected, version: 19.4R3-S4, versionType: custom
lessThan: 20.1*, status: affected, version: 20.1R2, versionType: custom
lessThan: 20.2R3-S7, status: affected, version: 20.2, versionType: custom
lessThan: 20.3R3-S5, status: affected, version: 20.3, versionType: custom
lessThan: 20.4R3-S6, status: affected, version: 20.4, versionType: custom
lessThan: 21.1R3-S4, status: affected, version: 21.1, versionType: custom
lessThan: 21.2R3-S2, status: affected, version: 21.2, versionType: custom
lessThan: 21.3R3-S1, status: affected, version: 21.3, versionType: custom
lessThan: 21.4R3, status: affected, version: 21.4, versionType: custom
lessThan: 22.1R1-S2, 22.1R2, status: affected, version: 22.1, versionType: custom
lessThan: 22.2R2, status: affected, version: 22.2, versionType: custom
}
{
defaultStatus: unaffected
product: Junos OS Evolved
vendor: Juniper Networks
versions:
lessThan: 20.4R3-S6-EVO, status: affected, version: unspecified, versionType: custom
changes: [at: 21.1R1-EVO, status: affected], lessThan: 21.1*, status: affected, version: 21.1, versionType: custom
changes: [at: 21.2R1-EVO, status: affected], lessThan: 21.2*, status: affected, version: 21.2, versionType: custom
lessThan: 21.3R3-S1-EVO, status: affected, version: 21.3, versionType: custom
lessThan: 21.4R3-EVO, status: affected, version: 21.4, versionType: custom
lessThan: 22.1R1-S2-EVO, 22.1R2-EVO, status: affected, version: 22.1, versionType: custom
lessThan: 22.2R2-EVO, status: affected, version: 22.2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 4.7
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
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: 19.4R3-S9, 20.2R3-S7, 20.3R3-S5, 20.4R3-S6, 21.1R3-S4, 21.2R3-S2, 21.3R3-S1, 21.4R3, 22.1R1-S2, 22.1R2, 22.2R2, 22.3R1, and all subsequent releases;
Junos OS Evolved: 20.4R3-S6-EVO, 21.3R3-S1-EVO, 21.4R3-EVO, 22.1R1-S2-EVO, 22.1R2-EVO, 22.2R2-EVO, 22.3R1-EVO , and all subsequent releases.
workarounds: There are no known workarounds for this issue.