First published: Wed Oct 11 2023(Updated: )
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; * 23.2 versions prior to 23.2R2. 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; * 23.2 versions prior to 23.2R2-EVO.
Credit: sirt@juniper.net sirt@juniper.net
Affected Software | Affected Version | How to fix |
---|---|---|
Juniper JUNOS | <20.4 | |
Juniper JUNOS | =20.4 | |
Juniper JUNOS | =20.4-r1 | |
Juniper JUNOS | =20.4-r1-s1 | |
Juniper JUNOS | =20.4-r2 | |
Juniper JUNOS | =20.4-r2-s1 | |
Juniper JUNOS | =20.4-r2-s2 | |
Juniper JUNOS | =20.4-r3 | |
Juniper JUNOS | =20.4-r3-s1 | |
Juniper JUNOS | =20.4-r3-s2 | |
Juniper JUNOS | =20.4-r3-s3 | |
Juniper JUNOS | =20.4-r3-s4 | |
Juniper JUNOS | =20.4-r3-s5 | |
Juniper JUNOS | =20.4-r3-s6 | |
Juniper JUNOS | =20.4-r3-s7 | |
Juniper JUNOS | =21.1-r1 | |
Juniper JUNOS | =21.1-r1-s1 | |
Juniper JUNOS | =21.1-r2 | |
Juniper JUNOS | =21.1-r2-s1 | |
Juniper JUNOS | =21.1-r2-s2 | |
Juniper JUNOS | =21.1-r3 | |
Juniper JUNOS | =21.1-r3-s1 | |
Juniper JUNOS | =21.1-r3-s2 | |
Juniper JUNOS | =21.1-r3-s3 | |
Juniper JUNOS | =21.1-r3-s4 | |
Juniper JUNOS | =21.1-r3-s5 | |
Juniper JUNOS | =21.2 | |
Juniper JUNOS | =21.2-r1 | |
Juniper JUNOS | =21.2-r1-s1 | |
Juniper JUNOS | =21.2-r1-s2 | |
Juniper JUNOS | =21.2-r2 | |
Juniper JUNOS | =21.2-r2-s1 | |
Juniper JUNOS | =21.2-r2-s2 | |
Juniper JUNOS | =21.2-r3 | |
Juniper JUNOS | =21.2-r3-s1 | |
Juniper JUNOS | =21.2-r3-s2 | |
Juniper JUNOS | =21.2-r3-s3 | |
Juniper JUNOS | =21.2-r3-s4 | |
Juniper JUNOS | =21.2-r3-s5 | |
Juniper JUNOS | =21.3 | |
Juniper JUNOS | =21.3-r1 | |
Juniper JUNOS | =21.3-r1-s1 | |
Juniper JUNOS | =21.3-r1-s2 | |
Juniper JUNOS | =21.3-r2 | |
Juniper JUNOS | =21.3-r2-s1 | |
Juniper JUNOS | =21.3-r2-s2 | |
Juniper JUNOS | =21.3-r3 | |
Juniper JUNOS | =21.3-r3-s1 | |
Juniper JUNOS | =21.3-r3-s2 | |
Juniper JUNOS | =21.3-r3-s3 | |
Juniper JUNOS | =21.3-r3-s4 | |
Juniper JUNOS | =21.4 | |
Juniper JUNOS | =21.4-r1 | |
Juniper JUNOS | =21.4-r1-s1 | |
Juniper JUNOS | =21.4-r1-s2 | |
Juniper JUNOS | =21.4-r2 | |
Juniper JUNOS | =21.4-r2-s1 | |
Juniper JUNOS | =21.4-r2-s2 | |
Juniper JUNOS | =21.4-r3 | |
Juniper JUNOS | =21.4-r3-s1 | |
Juniper JUNOS | =21.4-r3-s2 | |
Juniper JUNOS | =21.4-r3-s3 | |
Juniper JUNOS | =21.4-r3-s4 | |
Juniper JUNOS | =22.1-r1 | |
Juniper JUNOS | =22.1-r1-s1 | |
Juniper JUNOS | =22.1-r1-s2 | |
Juniper JUNOS | =22.1-r2 | |
Juniper JUNOS | =22.1-r2-s1 | |
Juniper JUNOS | =22.1-r2-s2 | |
Juniper JUNOS | =22.1-r3 | |
Juniper JUNOS | =22.1-r3-s1 | |
Juniper JUNOS | =22.1-r3-s2 | |
Juniper JUNOS | =22.1-r3-s3 | |
Juniper JUNOS | =22.2-r1 | |
Juniper JUNOS | =22.2-r1-s1 | |
Juniper JUNOS | =22.2-r1-s2 | |
Juniper JUNOS | =22.2-r2 | |
Juniper JUNOS | =22.2-r2-s1 | |
Juniper JUNOS | =22.2-r2-s2 | |
Juniper JUNOS | =22.2-r3 | |
Juniper JUNOS | =22.2-r3-s1 | |
Juniper JUNOS | =22.3-r1 | |
Juniper JUNOS | =22.3-r1-s1 | |
Juniper JUNOS | =22.3-r1-s2 | |
Juniper JUNOS | =22.3-r2 | |
Juniper JUNOS | =22.3-r2-s1 | |
Juniper JUNOS | =22.3-r3 | |
Juniper JUNOS | =22.4-r1 | |
Juniper JUNOS | =22.4-r1-s1 | |
Juniper JUNOS | =22.4-r1-s2 | |
Juniper JUNOS | =22.4-r2 | |
Juniper JUNOS | =23.1-r1 | |
Juniper JUNOS | =23.2-r1 | |
Juniper JUNOS | =23.2-r1-s1 | |
Juniper Junos Os Evolved | <20.4 | |
Juniper Junos Os Evolved | =20.4 | |
Juniper Junos Os Evolved | =20.4-r1 | |
Juniper Junos Os Evolved | =20.4-r1-s1 | |
Juniper Junos Os Evolved | =20.4-r1-s2 | |
Juniper Junos Os Evolved | =20.4-r2 | |
Juniper Junos Os Evolved | =20.4-r2-s1 | |
Juniper Junos Os Evolved | =20.4-r2-s2 | |
Juniper Junos Os Evolved | =20.4-r2-s3 | |
Juniper Junos Os Evolved | =20.4-r3 | |
Juniper Junos Os Evolved | =20.4-r3-s1 | |
Juniper Junos Os Evolved | =20.4-r3-s2 | |
Juniper Junos Os Evolved | =20.4-r3-s3 | |
Juniper Junos Os Evolved | =20.4-r3-s4 | |
Juniper Junos Os Evolved | =20.4-r3-s5 | |
Juniper Junos Os Evolved | =20.4-r3-s6 | |
Juniper Junos Os Evolved | =20.4-r3-s7 | |
Juniper Junos Os Evolved | =21.1 | |
Juniper Junos Os Evolved | =21.1-r1 | |
Juniper Junos Os Evolved | =21.1-r1-s1 | |
Juniper Junos Os Evolved | =21.1-r2 | |
Juniper Junos Os Evolved | =21.1-r3 | |
Juniper Junos Os Evolved | =21.1-r3-s1 | |
Juniper Junos Os Evolved | =21.1-r3-s2 | |
Juniper Junos Os Evolved | =21.1-r3-s3 | |
Juniper Junos Os Evolved | =21.2 | |
Juniper Junos Os Evolved | =21.2-r1 | |
Juniper Junos Os Evolved | =21.2-r1-s1 | |
Juniper Junos Os Evolved | =21.2-r1-s2 | |
Juniper Junos Os Evolved | =21.2-r2 | |
Juniper Junos Os Evolved | =21.2-r2-s1 | |
Juniper Junos Os Evolved | =21.2-r2-s2 | |
Juniper Junos Os Evolved | =21.2-r3 | |
Juniper Junos Os Evolved | =21.2-r3-s1 | |
Juniper Junos Os Evolved | =21.2-r3-s2 | |
Juniper Junos Os Evolved | =21.2-r3-s3 | |
Juniper Junos Os Evolved | =21.2-r3-s4 | |
Juniper Junos Os Evolved | =21.2-r3-s5 | |
Juniper Junos Os Evolved | =21.3 | |
Juniper Junos Os Evolved | =21.3-r1 | |
Juniper Junos Os Evolved | =21.3-r1-s1 | |
Juniper Junos Os Evolved | =21.3-r2 | |
Juniper Junos Os Evolved | =21.3-r2-s1 | |
Juniper Junos Os Evolved | =21.3-r2-s2 | |
Juniper Junos Os Evolved | =21.3-r3 | |
Juniper Junos Os Evolved | =21.3-r3-s1 | |
Juniper Junos Os Evolved | =21.3-r3-s2 | |
Juniper Junos Os Evolved | =21.3-r3-s3 | |
Juniper Junos Os Evolved | =21.3-r3-s4 | |
Juniper Junos Os Evolved | =21.4 | |
Juniper Junos Os Evolved | =21.4-r1 | |
Juniper Junos Os Evolved | =21.4-r1-s1 | |
Juniper Junos Os Evolved | =21.4-r1-s2 | |
Juniper Junos Os Evolved | =21.4-r2 | |
Juniper Junos Os Evolved | =21.4-r2-s1 | |
Juniper Junos Os Evolved | =21.4-r2-s2 | |
Juniper Junos Os Evolved | =21.4-r3 | |
Juniper Junos Os Evolved | =21.4-r3-s1 | |
Juniper Junos Os Evolved | =21.4-r3-s2 | |
Juniper Junos Os Evolved | =21.4-r3-s3 | |
Juniper Junos Os Evolved | =21.4-r3-s4 | |
Juniper Junos Os Evolved | =22.1-r1 | |
Juniper Junos Os Evolved | =22.1-r1-s1 | |
Juniper Junos Os Evolved | =22.1-r1-s2 | |
Juniper Junos Os Evolved | =22.1-r2 | |
Juniper Junos Os Evolved | =22.1-r2-s1 | |
Juniper Junos Os Evolved | =22.1-r3 | |
Juniper Junos Os Evolved | =22.1-r3-s1 | |
Juniper Junos Os Evolved | =22.1-r3-s2 | |
Juniper Junos Os Evolved | =22.1-r3-s3 | |
Juniper Junos Os Evolved | =22.2-r1 | |
Juniper Junos Os Evolved | =22.2-r1-s1 | |
Juniper Junos Os Evolved | =22.2-r2 | |
Juniper Junos Os Evolved | =22.2-r2-s1 | |
Juniper Junos Os Evolved | =22.2-r2-s2 | |
Juniper Junos Os Evolved | =22.2-r3 | |
Juniper Junos Os Evolved | =22.2-r3-s1 | |
Juniper Junos Os Evolved | =22.3-r1 | |
Juniper Junos Os Evolved | =22.3-r1-s1 | |
Juniper Junos Os Evolved | =22.3-r1-s2 | |
Juniper Junos Os Evolved | =22.3-r2 | |
Juniper Junos Os Evolved | =22.3-r2-s1 | |
Juniper Junos Os Evolved | =22.4-r1 | |
Juniper Junos Os Evolved | =22.4-r1-s1 | |
Juniper Junos Os Evolved | =22.4-r1-s2 | |
Juniper Junos Os Evolved | =22.4-r2 | |
Juniper Junos Os Evolved | =23.2 | |
Juniper Junos Os Evolved | =23.2-r1 | |
Juniper Junos Os Evolved | =23.2-r1-s1 |
The following software releases have been updated to resolve this specific issue: Junos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases. Junos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.
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