CVE-2022-22219: Junos OS and Junos OS Evolved: RPD core upon receipt of a specific EVPN route by a BGP route reflector in an EVPN environment
First published: Tue Oct 18 2022(Updated: )
Due to the Improper Handling of an Unexpected Data Type in the processing of EVPN routes on Juniper Networks Junos OS and Junos OS Evolved, an attacker in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash, leading to a Denial of Service (DoS) condition. Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have 'leave-sync-route-oldstyle' enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | =21.4 | |
| 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 | =22.1-r1 | |
| Juniper JUNOS | =22.1-r1-s1 | |
| Juniper JUNOS | =22.1-r2 | |
| Juniper JUNOS | =22.1-r2-s2 | |
| Juniper JUNOS | =22.2-r1 | |
| Juniper JUNOS | =22.2-r1-s1 | |
| 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 | =22.1-r1 | |
| Juniper Junos Os Evolved | =22.1-r1-s1 | |
| Juniper Junos Os Evolved | =22.2-r1 | |
| Juniper Junos Os Evolved | =22.2-r1-s1 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS 21.3R3-S2, 21.4R2-S2, 21.4R3, 22.1R1-S2, 22.1R3, 22.2R2, 22.3R1, and all subsequent releases. Junos OS Evolved 21.4R3-EVO, 22.1R1-S2-EVO, 22.1R3-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- collector/nvd-index
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/severity
- agent/author
- agent/weakness
- agent/title
- agent/last-modified-date
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/juniper
- canonical/juniper junos
- version/juniper junos/21.3
- version/juniper junos/21.3-r1
- version/juniper junos/21.3-r1-s1
- version/juniper junos/21.3-r1-s2
- version/juniper junos/21.3-r2
- version/juniper junos/21.3-r2-s1
- version/juniper junos/21.3-r2-s2
- version/juniper junos/21.3-r3
- version/juniper junos/21.3-r3-s1
- version/juniper junos/21.4
- version/juniper junos/21.4-r1
- version/juniper junos/21.4-r1-s1
- version/juniper junos/21.4-r1-s2
- version/juniper junos/21.4-r2
- version/juniper junos/21.4-r2-s1
- version/juniper junos/22.1-r1
- version/juniper junos/22.1-r1-s1
- version/juniper junos/22.1-r2
- version/juniper junos/22.1-r2-s2
- version/juniper junos/22.2-r1
- version/juniper junos/22.2-r1-s1
- canonical/juniper junos os evolved
- version/juniper junos os evolved/21.3-r1
- version/juniper junos os evolved/21.3-r1-s1
- version/juniper junos os evolved/21.3-r2
- version/juniper junos os evolved/21.3-r2-s1
- version/juniper junos os evolved/21.3-r2-s2
- version/juniper junos os evolved/22.1-r1
- version/juniper junos os evolved/22.1-r1-s1
- version/juniper junos os evolved/22.2-r1
- version/juniper junos os evolved/22.2-r1-s1