title: Junos OS: SRX Series: Upon processing of a genuine packet the pkid process will crash during CMPv2 auto-re-enrollment
description: On SRX Series devices, an Improper Check for Unusual or Exceptional Conditions when using Certificate Management Protocol Version 2 (CMPv2) auto re-enrollment, allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS) by crashing the pkid process. The pkid process cannot handle an unexpected response from the Certificate Authority (CA) server, leading to crash. A restart is required to restore services. This issue affects: Juniper Networks Junos OS on SRX Series: All versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S1; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2.
problem types: Denial of Service (DoS)
affected:
{
vendor: Juniper Networks
product: Junos OS
versions:
version: unspecified, lessThan: 19.1R3-S9, status: affected, versionType: custom
version: 19.2, status: affected, lessThan: 19.2R3-S6, versionType: custom
version: 19.3, status: affected, lessThan: 19.3R3-S7, versionType: custom
version: 19.4, status: affected, lessThan: 19.4R3-S9, versionType: custom
version: 20.2, status: affected, lessThan: 20.2R3-S5, versionType: custom
version: 20.3, status: affected, lessThan: 20.3R3-S4, versionType: custom
version: 20.4, status: affected, lessThan: 20.4R3-S4, versionType: custom
version: 21.1, status: affected, lessThan: 21.1R3-S1, versionType: custom
version: 21.2, status: affected, lessThan: 21.2R3, versionType: custom
version: 21.3, status: affected, lessThan: 21.3R2, versionType: custom
version: 21.4, status: affected, lessThan: 21.4R2, versionType: custom
platforms: SRX Series
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
]
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: 19.1R3-S9, 19.2R3-S6, 19.3R3-S7, 19.4R2-S7, 19.4R3-S9, 20.2R3-S5, 20.3R3-S4, 20.4R3-S4, 21.1R3-S1, 21.2R3, 21.3R2, 21.4R1-S2, 21.4R2, 22.1R1, and all subsequent releases.
workarounds: There are no known workarounds for this issue.