Vulnerability identifier: #VU59632

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-2022-22153

CWE-ID: CWE-407

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 DoS attack.

The vulnerability exists due to insufficient algorithmic complexity along with an error of resource allocation in the flow processing daemon (flowd) on SRX Series and MX Series with SPC3. A remote attacker can cause latency in transit packet processing and even packet loss, if transit traffic includes a significant percentage (> 5%) of fragmented packets.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 18.4 - 18.4R2-S10, 18.4R1-S5, 18.4R2-S3, 19.3, 19.2 - 19.2R1-S9, 19.2R1-S4, 19.1 - 19.1R1-S6, 19.1R1-S4, 18.3 - 18.3R2-S4, 18.3R2-S3, 18.2 - 18.2R2-S8

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External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11261&cat=SIRT_1&actp=LIST

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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.