title: Junos OS: SRX Series: A flowd core occurs when running a low privileged CLI command
description: An Out-of-bounds Read vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a local, authenticated attacker with low privileges, to cause a Denial of Service (DoS).
If a low privileged user executes a specific CLI command, flowd which is responsible for traffic forwarding in SRX crashes and generates a core dump. This will cause temporary traffic interruption until the flowd process is restarted automatically. Continued execution of this command will lead to a sustained DoS.
This issue affects Juniper Networks Junos OS on SRX Series:
All versions prior to 20.2R3-S7;
20.3 version 20.3R1 and later versions;
20.4 versions prior to 20.4R3-S6;
21.1 versions prior to 21.1R3-S5;
21.2 versions prior to 21.2R3-S4;
21.3 versions prior to 21.3R3-S4;
21.4 versions prior to 21.4R3-S3;
22.1 versions prior to 22.1R3-S1;
22.2 versions prior to 22.2R3;
22.3 versions prior to 22.3R2;
22.4 versions prior to 22.4R1-S1, 22.4R2.
problem types: CWE-125 Out-of-bounds Read
affected:
{
defaultStatus: unaffected
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 20.2R3-S7, status: affected, version: unspecified, versionType: custom
changes: [at: 20.3R1, status: affected], lessThan: 20.3*, status: affected, version: 20.3, versionType: custom
lessThan: 20.4R3-S6, status: affected, version: 20.4, versionType: custom
lessThan: 21.1R3-S5, status: affected, version: 21.1, versionType: custom
lessThan: 21.2R3-S4, status: affected, version: 21.2, versionType: custom
lessThan: 21.3R3-S4, status: affected, version: 21.3, versionType: custom
lessThan: 21.4R3-S3, status: affected, version: 21.4, versionType: custom
lessThan: 22.1R3-S1, status: affected, version: 22.1, versionType: custom
lessThan: 22.2R3, status: affected, version: 22.2, versionType: custom
lessThan: 22.3R2, status: affected, version: 22.3, versionType: custom
lessThan: 22.4R1-S1, 22.4R2, status: affected, version: 22.4, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 5.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/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 20.2R3-S7, 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1-S1, 22.4R2, 23.1R1, and all subsequent releases.
workarounds: There are no available workarounds for this issue.