CVE-2024-39524

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 versions before 20.4R3-S7-EVO, 21.2-EVO versions before 21.2R3-S8-EVO, 21.4-EVO versions before 21.4R3-S7-EVO,  22.2-EVO versions before 22.2R3-EVO, 22.3-EVO versions before 22.3R2-EVO, 22.4-EVO versions before 22.4R2-EVO.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 20.4R3-S7-EVO, 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.

Category

8.5
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.19%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA82975 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-39524?
CVE-2024-39524 has been scored as a high severity vulnerability.
How to fix CVE-2024-39524?
To fix CVE-2024-39524: The following software releases have been updated to resolve this specific issue: 20.4R3-S7-EVO, 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.
Is CVE-2024-39524 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39524 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-39524?
CVE-2024-39524 affects Juniper Networks Junos OS Evolved.
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