Denial of service in Junos OS NETISR



Published: 2022-01-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-22159
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Juniper Junos OS
Operating systems & Components / Operating system

Vendor

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU59595

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-2022-22159

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

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

The vulnerability exists due to resource exhaustion in the NETISR network queue functionality. A remote attacker can send specially crafted packets over an IPv4 unicast routing equal-cost multi-path (ECMP) unilist selection and force the routing protocol daemon (rpd) to consume all available CPU resources.

Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: before 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.3R3-S5, 18.4R3-S9, 19.1R3-S7

CPE2.3 External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11267&cat=SIRT_1&actp=LIST

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.



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