Vulnerability Monitor

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CVE-2023-28974

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 19 products from juniper, from juniper, from juniper and 16 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2023-04-17T22:15:09.277

Last Modified

2024-11-21T07:56:19.220

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.4 (HIGH)

Weaknesses

Type: Secondary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	juniper	junos	< 19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	19.4	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.2	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	20.3	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.1	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.2	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.3	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	21.4	Yes
Operating System	juniper	junos	22.1	Yes
Operating System	juniper	junos	22.1	Yes
Operating System	juniper	junos	22.1	Yes
Operating System	juniper	junos	22.1	Yes
Operating System	juniper	junos	22.1	Yes
Operating System	juniper	junos	22.2	Yes
Operating System	juniper	junos	22.2	Yes
Operating System	juniper	junos	22.2	Yes
Operating System	juniper	junos	22.3	Yes
Operating System	juniper	junos	22.3	Yes
Hardware	juniper	mx	-	No
Hardware	juniper	mx10	-	No
Hardware	juniper	mx10000	-	No
Hardware	juniper	mx10003	-	No
Hardware	juniper	mx10008	-	No
Hardware	juniper	mx10016	-	No
Hardware	juniper	mx104	-	No
Hardware	juniper	mx150	-	No
Hardware	juniper	mx2008	-	No
Hardware	juniper	mx2010	-	No
Hardware	juniper	mx2020	-	No
Hardware	juniper	mx204	-	No
Hardware	juniper	mx240	-	No
Hardware	juniper	mx40	-	No
Hardware	juniper	mx480	-	No
Hardware	juniper	mx5	-	No
Hardware	juniper	mx80	-	No
Hardware	juniper	mx960	-	No

References

https://supportportal.juniper.net/JSA70599 Vendor Advisory ([email protected])
https://supportportal.juniper.net/JSA70599 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.