Detections
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Juniper Junos OS Local Arbitrary Code Execution (JSA93446)

medium Nessus Plugin ID 232834

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA93446 advisory:

 - An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device. A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS: * All versions before 21.2R3-S9,
 * 21.4 versions before 21.4R3-S10, * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2. (CVE-2025-21590)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Apply the relevant Junos software release referenced in Juniper advisory JSA93446

See Also

http://www.nessus.org/u?1b3f284f

http://www.nessus.org/u?d4460528

http://www.nessus.org/u?9b995393

Plugin Details

Severity: Medium

ID: 232834

File Name: juniper_jsa93446.nasl

Version: 1.2

Type: combined

Published: 3/17/2025

Updated: 3/19/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:C/A:N

CVSS Score Source: CVE-2025-21590

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.7

Threat Score: 6.7

Threat Vector: CVSS:4.0/E:A

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

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/JUNOS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/12/2025

Vulnerability Publication Date: 3/12/2025

CISA Known Exploited Vulnerability Due Dates: 4/3/2025

Reference Information

CVE: CVE-2025-21590

IAVA: 2025-A-0170

JSA: JSA93446