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CVE-2023-44186
CVE ID
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CVE-2023-44186
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
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.
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CVSS V3 Severity and Metrics
General Information
Vendors
- juniper
Products
- junos,
- junos 20.4,
- junos 21.1,
- junos 21.2,
- junos 21.3,
- junos 21.4,
- junos 22.1,
- junos 22.2,
- junos 22.3,
- junos 22.4,
- junos 23.1,
- junos 23.2,
- junos os evolved,
- junos os evolved 20.4,
- junos os evolved 21.1,
- junos os evolved 21.2,
- junos os evolved 21.3,
- junos os evolved 21.4,
- junos os evolved 22.1,
- junos os evolved 22.2,
- junos os evolved 22.3,
- junos os evolved 22.4,
- junos os evolved 23.2
References
Miscellaneous
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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