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.
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
Vendors | Products |
---|---|
Juniper |
|
Configuration 1 [-]
|
Configuration 2 [-]
|
References
Link | Resource |
---|---|
https://supportportal.juniper.net/JSA73150 | Mitigation Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: juniper
Published: 2023-10-11T20:08:26.308Z
Updated: 2024-03-05T23:07:57.356Z
Reserved: 2023-09-26T19:30:27.953Z
Link: CVE-2023-44186
JSON object: View
NVD Information
Status : Modified
Published: 2023-10-11T21:15:09.890
Modified: 2024-03-06T00:15:52.390
Link: CVE-2023-44186
JSON object: View
Redhat Information
No data.
CWE