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.
References
Link | Resource |
---|---|
https://supportportal.juniper.net/JSA73150 | Mitigation Vendor Advisory |
https://supportportal.juniper.net/JSA73150 | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
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History
21 Nov 2024, 08:25
Type | Values Removed | Values Added |
---|---|---|
References | () https://supportportal.juniper.net/JSA73150 - Mitigation, Vendor Advisory |
06 Mar 2024, 00:15
Type | Values Removed | Values Added |
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New CVE |
Information
Published : 2023-10-11 21:15
Updated : 2024-11-21 08:25
NVD link : CVE-2023-44186
Mitre link : CVE-2023-44186
CVE.ORG link : CVE-2023-44186
JSON object : View
Products Affected
juniper
- junos_os_evolved
- junos
CWE
CWE-755
Improper Handling of Exceptional Conditions