Vulnerability identifier: #VU68364

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22208

CWE-ID: CWE-416

Exploitation vector: 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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in the Routing Protocol Daemon (rdp) when handling BGP session flaps. A remote attacker can cause continued flagging of BGP sessions and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.1 - 21.1R3-S1-EVO, 20.4 - 20.4R3-S3-EVO, 20.4R2-S2-EVO, 21.3-EVO - 21.3R1-S1-EVO, 21.2-EVO - 21.2R2-S2-EVO

Juniper Junos OS: 21.1 - 21.1R3-S2, 21.2R1 - 21.2R2, 19.4 - 19.4R2-S5, 19.4R1 - 19.4R1-S4, 18.4 - 18.4R2-S8, 18.4R1-S5, 18.4R2-S3, 19.1 - 19.1R3-S7, 19.1R1-S4, 20.3 - 20.3R3-S1, 19.3 - 19.3R3-S4, 19.3R1-S1, 19.3R2 - 19.3R2-S7, 20.4 - 20.4R3, 20.2 - 20.2R3-S2

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External links
http://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-An-rpd-crash-can-occur-due-to-memory-corruption-caused-by-flapping-BGP-sessions-CVE-2022-22208

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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 Internet.

Is there known malware, which exploits this vulnerability?

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