CVE-2023-28974
Assigner: juniper
Published: 2023-04-17T00:00:00
State: PUBLISHED
title: Junos OS: MX Series: In a BBE scenario upon receipt of specific malformed packets from subscribers the process bbe-smgd will crash
datePublic: 2023-04-12T00:00:00
descriptions: value: An Improper Check for Unusual or Exceptional Conditions vulnerability in the bbe-smgd of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). In a Broadband Edge / Subscriber Management scenario on MX Series when a specifically malformed ICMP packet addressed to the device is received from a subscriber the bbe-smgd will crash, affecting the subscriber sessions that are connecting, updating, or terminating. Continued receipt of such packets will lead to a sustained DoS condition. When this issue happens the below log can be seen if the traceoptions for the processes smg-service are enabled: BBE_TRACE(TRACE_LEVEL_INFO, "%s: Dropped unsupported ICMP PKT ... This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 19.4R3-S11; 20.2 versions prior to 20.2R3-S7; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R2; 22.3 versions prior to 22.3R1-S2, 22.3R2.
affected: vendor: Juniper Networks
product: Junos OS
versions: version: unspecified
lessThan: 19.4R3-S11
status: affected
versionType: custom
version: 20.2
status: affected
lessThan: 20.2R3-S7
versionType: custom
version: 20.3
status: affected
lessThan: 20.3R3-S6
versionType: custom
version: 20.4
status: affected
lessThan: 20.4R3-S6
versionType: custom
version: 21.1
status: affected
lessThan: 21.1R3-S4
versionType: custom
version: 21.2
status: affected
lessThan: 21.2R3-S4
versionType: custom
version: 21.3
status: affected
lessThan: 21.3R3-S3
versionType: custom
version: 21.4
status: affected
lessThan: 21.4R3-S2
versionType: custom
version: 22.1
status: affected
lessThan: 22.1R2-S2, 22.1R3
versionType: custom
version: 22.2
status: affected
lessThan: 22.2R2
versionType: custom
version: 22.3
status: affected
lessThan: 22.3R1-S2, 22.3R2
versionType: custom
platforms: MX Series
metrics: cvssV3_1: version: 3.1
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector: ADJACENT_NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 7.4
baseSeverity: HIGH
problemTypes: descriptions: type: CWE
description: CWE-754 Improper Check for Unusual or Exceptional Conditions
cweId: CWE-754
descriptions: type: text
description: Denial of Service (DoS)
x_generator: engine: Vulnogram 0.0.9
source: advisory: JSA70599
defect: 1681389
discovery: USER
configurations: value: To be exposed to this vulnerability subscriber management needs to be enabled via:

  [system services subscriber-management enable]
workarounds: value: There are no known workarounds for this issue.
exploits: value: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: value: The following software releases have been updated to resolve this specific issue: 19.4R3-S11, 20.2R3-S7, 20.3R3-S6, 20.4R3-S6, 21.1R3-S4, 21.2R3-S4, 21.3R3-S3, 21.4R3-S2, 22.1R2-S2, 22.1R3, 22.2R2, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.