Vulnerability identifier: #VU61049

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-2022-22178

CWE-ID: CWE-121

Exploitation vector: 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 a boundary error when processing SIP packets in flowd, if the SIP ALG is enabled. A remote unauthenticated attacker can send specially crafted SIP packets to the system, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.4 - 20.4R3-S1, 21.2R1 - 21.2R2-S2, 21.3R1 - 21.3R1-S2, 21.1 - 21.1R2-S2

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External links
http://kb.juniper.net/JSA11284

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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.