Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-39513

Severity CVSS v4.0:
MEDIUM
Type:
CWE-20 Input Validation
Publication date:
10/07/2024
Last modified:
07/02/2025

Description

An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).<br /> <br /> When a specific "clear" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.<br /> <br /> The crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.<br /> This issue affects Junos OS Evolved: <br /> <br /> <br /> <br /> * All versions before 20.4R3-S9-EVO, <br /> * from 21.2-EVO before 21.2R3-S7-EVO, <br /> * from 21.3-EVO before 21.3R3-S5-EVO, <br /> * from 21.4-EVO before 21.4R3-S6-EVO, <br /> * from 22.1-EVO before 22.1R3-S4-EVO, <br /> * from 22.2-EVO before 22.2R3-S3-EVO, <br /> * from 22.3-EVO before 22.3R3-S3-EVO, <br /> * from 22.4-EVO before 22.4R3-EVO,<br /> * from 23.2-EVO before 23.2R2-EVO.

Impact

Vector 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A CVSS v4.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A

Attack Vector (AV): Local
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None
Recovery (R): Automatic

Base Score 4.0
6.80
Severity 4.0
MEDIUM
Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* 20.4 (excluding)
cpe:2.3:o:juniper:junos_os_evolved:20.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s5:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools