Privilege escalation in Juniper Networks Junos OS and Junos OS Evolved



Published: 2021-10-19
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-31350
CWE-ID CWE-269
Exploitation vector 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 medium risk vulnerability.

1) Improper Privilege Management

EUVDB-ID: #VU57435

Risk: Medium

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

CVE-ID: CVE-2021-31350

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper privilege management in the gRPC framework. A remote authenticated attacker can escalate privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 18.4R1 - 20.4R1-S1

Junos OS Evolved: 21.1-EVO

External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11215&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 Internet.

Is there known malware, which exploits this vulnerability?

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



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