Privilege escalation in Junos OS Evolved ssh CLI



Published: 2022-10-21
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-22239
CWE-ID CWE-250
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Junos OS Evolved
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Execution with unnecessary privileges

EUVDB-ID: #VU68562

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22239

CWE-ID: CWE-250 - Execution with Unnecessary Privileges

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to unnecessary privileges used by the Management Daemon (mgd). A local low-privileged user can leverage the ssh CLI command to escalate privileges on the device and potentially remote systems.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 21.3R1-S1-EVO

External links

http://kb.juniper.net/JSA69895


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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