Vulnerability identifier: #VU82476

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22398

CWE-ID: CWE-824

Exploitation vector: Local network

Exploit availability: No

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

Vendor: Juniper Networks, Inc.

Description

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

The vulnerability exists due to access of uninitialized pointer error in the Routing Protocol Daemon (rpd). A remote non-authenticated attacker can cause a Denial of Service (DoS).

When an MPLS ping is performed on BGP LSPs, the RPD might crash.

Repeated execution of this operation will lead to a sustained DoS.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 20.4R3-S3-EVO, 20.4R2-S2-EVO, 21.2-EVO, 21.1 - 21.1R1-S1-EVO

Juniper Junos OS: 20.3 - 20.3R3-S4, 20.4 - 20.4R3-S3, 20.2 - 20.2R3-S4, 20.1 - 20.1R3-S3, 19.1 - 19.1R3-S8, 19.1R1-S4, 19.4 - 19.4R2-S6, 19.4R1 - 19.4R1-S4, 19.3 - 19.3R3-S5, 19.3R1-S1, 19.3R2 - 19.3R2-S7, 19.2 - 19.2R1-S8, 19.2R1-S4, 15.1 - 15.1R7-S11, 15.1F - 15.1F7-S2, 21.1 - 21.1R1

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External links
http://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-RPD-might-crash-when-MPLS-ping-is-performed-on-BGP-LSPs-CVE-2023-22398

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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.