An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.
This issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.
Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.
This issue affects:
Juniper Networks Junos OS:
* All versions prior to 20.4R3-S8;
* 21.1 versions 21.1R1 and later;
* 21.2 versions prior to 21.2R3-S6;
* 21.3 versions prior to 21.3R3-S5;
* 21.4 versions prior to 21.4R3-S5;
* 22.1 versions prior to 22.1R3-S4;
* 22.2 versions prior to 22.2R3-S2;
* 22.3 versions prior to 22.3R2-S2, 22.3R3-S1;
* 22.4 versions prior to 22.4R2-S1, 22.4R3.
Juniper Networks Junos OS Evolved
* All versions prior to 20.4R3-S8-EVO;
* 21.1 versions 21.1R1-EVO and later;
* 21.2 versions prior to 21.2R3-S6-EVO;
* 21.3 versions prior to 21.3R3-S5-EVO;
* 21.4 versions prior to 21.4R3-S5-EVO;
* 22.1 versions prior to 22.1R3-S4-EVO;
* 22.2 versions prior to 22.2R3-S2-EVO;
* 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
* 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploitation none
Automatable yes
Technical Impact partial
Affected Vendors & Products
Vendors | Products |
---|---|
Juniper |
|
Configuration 1 [-]
|
Configuration 2 [-]
|
No data.
References
Link | Providers |
---|---|
https://supportportal.juniper.net/JSA73150 |
History
Tue, 03 Dec 2024 15:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
|
MITRE
Status: PUBLISHED
Assigner: juniper
Published: 2023-10-11T20:08:26.308Z
Updated: 2024-12-03T14:49:41.755Z
Reserved: 2023-09-26T19:30:27.953Z
Link: CVE-2023-44186
Vulnrichment
Updated: 2024-08-02T19:59:51.607Z
NVD
Status : Modified
Published: 2023-10-11T21:15:09.890
Modified: 2024-11-21T08:25:23.820
Link: CVE-2023-44186
Redhat
No data.