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THREATINT
PUBLISHED

CVE-2024-39520

Junos OS Evolved: CLI parameter processing issue allows privilege escalation



Description

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system. The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level. This issue affects Junos OS Evolved: * All version before 20.4R3-S6-EVO,  * 21.2-EVO versions before 21.2R3-S4-EVO, * 21.4-EVO versions before 21.4R3-S6-EVO,  * 22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO,  * 22.3-EVO versions before 22.3R2-EVO.

Reserved 2024-06-25 | Published 2024-07-11 | Updated 2024-08-02 | Assigner juniper


HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

HIGH: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

Default status
unaffected

Any version before 20.4R3-S6-EVO
affected

21.2-EVO before 21.2R3-S4-EVO
affected

21.4-EVO before 21.4R3-S6-EVO
affected

22.2-EVO before 22.2R2-S1-EVO, 22.2R3-EVO
affected

22.3-EVO before 22.3R2-EVO
affected

References

supportportal.juniper.net/JSA82975 vendor-advisory

cve.org (CVE-2024-39520)

nvd.nist.gov (CVE-2024-39520)

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