Vulnerability identifier: #VU75106

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28974

CWE-ID: CWE-754

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling in the bbe-smgd. A remote attacker on the local network can send specially crafted ICMP packets to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.2 - 20.2R3-S6, 22.3R1 - 22.3R1-S1, 21.2R1 - 21.2R3-S3, 20.4 - 20.4R3-S5, 19.4 - 19.4R3-S10, 19.4R1 - 19.4R1-S4, 21.3R1 - 21.3R3-S2, 20.3 - 20.3R3-S5, 21.4R1 - 21.4R3-S1, 21.1 - 21.1R3-S3, 22.2R1 - 22.2R1-S2, 22.1R1 - 22.1R2-S1

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External links
http://supportportal.juniper.net/s/article/2023-04-Security-Bulletin-Junos-OS-MX-Series-In-a-BBE-scenario-upon-receipt-of-specific-malformed-packets-from-subscribers-the-process-bbe-smgd-will-crash-CVE-2023-28974

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.