Denial of service in Juniper Networks Junos OS and Junos OS Evolved



Published: 2021-10-19
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-31362
CWE-ID CWE-693
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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Juniper Junos OS
Operating systems & Components / Operating system

Junos OS Evolved
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Protection Mechanism Failure

EUVDB-ID: #VU57438

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31362

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in RPD (routing protocol daemon). A remote attacker on the local network can bypass implemented security restrictions and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 18.2R1 - 20.4R1-S1

Junos OS Evolved: 21.1

External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11224&cat=SIRT_1&actp=LIST


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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