CVE-2024-39533

Junos OS: QFX5000 Series and EX4600 Series: Output firewall filter is not applied if certain match criteria are used

Severity Score

6.9

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

MITRE

An Unimplemented or Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on QFX5000 Series and EX4600 Series allows an unauthenticated, network-based attacker to cause a minor integrity impact to downstream networks.If one or more of the following match conditions

ip-source-address
ip-destination-address
arp-type

which are not supported for this type of filter, are used in an ethernet switching filter, and then this filter is applied as an output filter, the configuration can be committed but the filter will not be in effect.

This issue affects Junos OS on QFX5000 Series and EX4600 Series:

* All version before 21.2R3-S7,
* 21.4 versions before 21.4R3-S6,
* 22.1 versions before 22.1R3-S5,
* 22.2 versions before 22.2R3-S3,
* 22.3 versions before 22.3R3-S2,
* 22.4 versions before 22.4R3,
* 23.2 versions before 23.2R2.

Please note that the implemented fix ensures these unsupported match conditions cannot be committed anymore.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

None

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-06-25 CVE Reserved
2024-07-11 CVE Published
2024-07-12 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-447: Unimplemented or Unsupported Feature in UI

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://supportportal.juniper.net/JSA82993	2024-08-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				< 21.2R3-S7 Search vendor "Juniper Networks" for product "Junos OS" and version " < 21.2R3-S7"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 21.4 < 21.4R3-S6 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4 < 21.4R3-S6"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.1 < 22.1R3-S5 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.1 < 22.1R3-S5"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.2 < 22.2R3-S3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2 < 22.2R3-S3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.3 < 22.3R3-S2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.3 < 22.3R3-S2"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.4 < 22.4R3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 23.2 < 23.2R2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2"		en		Affected