Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2024-21605

Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
12/04/2024
Last modified:
06/02/2025

Description

An Exposure of Resource to Wrong Sphere vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX 300 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).<br /> <br /> <br /> <br /> Specific valid link-local traffic is not blocked on ports in STP blocked state but is instead sent to the control plane of the device. This leads to excessive resource consumption and in turn severe impact on all control and management protocols of the device.<br /> <br /> <br /> <br /> This issue affects Juniper Networks Junos OS:<br /> * 21.2 version 21.2R3-S3 and later versions earlier than 21.2R3-S6;<br /> * 22.1 version 22.1R3 and later versions earlier than 22.1R3-S4;<br /> * 22.2 version <br /> <br /> 22.2R2<br /> <br /> and later versions earlier than 22.2R3-S2;<br /> * 22.3 version <br /> <br /> 22.3R2 <br /> <br /> and later versions earlier than 22.3R3-S1;<br /> <br /> * 22.4 versions earlier than 22.4R2-S2, 22.4R3;<br /> * 23.2 versions earlier than 23.2R1-S1, 23.2R2.<br /> <br /> <br /> <br /> <br /> This issue does not affect Juniper Networks Junos OS 21.4R1 and later versions of 21.4.

Impact

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

Base Score: 7.10 HIGH
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

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

Base Score 4.0
7.10
Severity 4.0
HIGH
Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
6.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.3:r2-s2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools