CVE-2022-22171: Junos OS: Specific packets over VXLAN cause FPC reset
First published: Wed Jan 19 2022(Updated: )
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause a Denial of Service (DoS) by sending specific packets over VXLAN which cause the PFE to reset. This issue affects: Juniper Networks Junos OS 19.4 versions prior to 19.4R3-S7; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2; 21.3 versions prior to 21.3R1-S1, 21.3R2. This issue does not affect versions of Junos OS prior to 19.4R1.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =19.4-r1 | |
| Juniper JUNOS | =19.4-r1-s1 | |
| Juniper JUNOS | =19.4-r1-s2 | |
| Juniper JUNOS | =19.4-r1-s3 | |
| Juniper JUNOS | =19.4-r1-s4 | |
| Juniper JUNOS | =19.4-r2 | |
| Juniper JUNOS | =19.4-r2-s1 | |
| Juniper JUNOS | =19.4-r2-s2 | |
| Juniper JUNOS | =19.4-r2-s3 | |
| Juniper JUNOS | =19.4-r2-s4 | |
| Juniper JUNOS | =19.4-r2-s5 | |
| Juniper JUNOS | =19.4-r3 | |
| Juniper JUNOS | =19.4-r3-s1 | |
| Juniper JUNOS | =19.4-r3-s2 | |
| Juniper JUNOS | =19.4-r3-s3 | |
| Juniper JUNOS | =19.4-r3-s4 | |
| Juniper JUNOS | =19.4-r3-s5 | |
| Juniper JUNOS | =19.4-r3-s6 | |
| Juniper JUNOS | =20.1-r1 | |
| Juniper JUNOS | =20.1-r1-s1 | |
| Juniper JUNOS | =20.1-r1-s2 | |
| Juniper JUNOS | =20.1-r1-s3 | |
| Juniper JUNOS | =20.1-r1-s4 | |
| Juniper JUNOS | =20.1-r2 | |
| Juniper JUNOS | =20.1-r2-s1 | |
| Juniper JUNOS | =20.1-r2-s2 | |
| Juniper JUNOS | =20.1-r3 | |
| Juniper JUNOS | =20.1-r3-s1 | |
| Juniper JUNOS | =20.1-r3-s2 | |
| Juniper JUNOS | =20.2-r1 | |
| Juniper JUNOS | =20.2-r1-s1 | |
| Juniper JUNOS | =20.2-r1-s2 | |
| Juniper JUNOS | =20.2-r1-s3 | |
| Juniper JUNOS | =20.2-r2 | |
| Juniper JUNOS | =20.2-r2-s1 | |
| Juniper JUNOS | =20.2-r2-s2 | |
| Juniper JUNOS | =20.2-r2-s3 | |
| Juniper JUNOS | =20.2-r3 | |
| Juniper JUNOS | =20.2-r3-s1 | |
| Juniper JUNOS | =20.2-r3-s2 | |
| Juniper JUNOS | =20.3-r1 | |
| Juniper JUNOS | =20.3-r1-s1 | |
| Juniper JUNOS | =20.3-r2 | |
| Juniper JUNOS | =20.3-r2-s1 | |
| Juniper JUNOS | =20.3-r3 | |
| Juniper JUNOS | =20.3-r3-s1 | |
| 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 | =21.1-r1 | |
| Juniper JUNOS | =21.1-r1-s1 | |
| Juniper JUNOS | =21.1-r2 | |
| Juniper JUNOS | =21.1-r2-s1 | |
| Juniper JUNOS | =21.2-r1 | |
| Juniper JUNOS | =21.2-r1-s1 | |
| Juniper JUNOS | =21.3-r1 |
Remedy
The following Junos OS software releases have been updated to resolve this specific issue: 19.4R3-S7, 20.1R3-S3, 20.2R3-S3, 20.3R3-S2, 20.4R3-S1, 21.1R3, 21.2R2, 21.3R1-S1, 21.3R2, 21.4R1, and all subsequent releases.
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Reference Links
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- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
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- agent/references
- agent/last-modified-date
- agent/tags
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- agent/event
- vendor/juniper
- canonical/juniper junos
- version/juniper junos/19.4-r1
- version/juniper junos/19.4-r1-s1
- version/juniper junos/19.4-r1-s2
- version/juniper junos/19.4-r1-s3
- version/juniper junos/19.4-r1-s4
- version/juniper junos/19.4-r2
- version/juniper junos/19.4-r2-s1
- version/juniper junos/19.4-r2-s2
- version/juniper junos/19.4-r2-s3
- version/juniper junos/19.4-r2-s4
- version/juniper junos/19.4-r2-s5
- version/juniper junos/19.4-r3
- version/juniper junos/19.4-r3-s1
- version/juniper junos/19.4-r3-s2
- version/juniper junos/19.4-r3-s3
- version/juniper junos/19.4-r3-s4
- version/juniper junos/19.4-r3-s5
- version/juniper junos/19.4-r3-s6
- version/juniper junos/20.1-r1
- version/juniper junos/20.1-r1-s1
- version/juniper junos/20.1-r1-s2
- version/juniper junos/20.1-r1-s3
- version/juniper junos/20.1-r1-s4
- version/juniper junos/20.1-r2
- version/juniper junos/20.1-r2-s1
- version/juniper junos/20.1-r2-s2
- version/juniper junos/20.1-r3
- version/juniper junos/20.1-r3-s1
- version/juniper junos/20.1-r3-s2
- version/juniper junos/20.2-r1
- version/juniper junos/20.2-r1-s1
- version/juniper junos/20.2-r1-s2
- version/juniper junos/20.2-r1-s3
- version/juniper junos/20.2-r2
- version/juniper junos/20.2-r2-s1
- version/juniper junos/20.2-r2-s2
- version/juniper junos/20.2-r2-s3
- version/juniper junos/20.2-r3
- version/juniper junos/20.2-r3-s1
- version/juniper junos/20.2-r3-s2
- version/juniper junos/20.3-r1
- version/juniper junos/20.3-r1-s1
- version/juniper junos/20.3-r2
- version/juniper junos/20.3-r2-s1
- version/juniper junos/20.3-r3
- version/juniper junos/20.3-r3-s1
- version/juniper junos/20.4-r1
- version/juniper junos/20.4-r1-s1
- version/juniper junos/20.4-r2
- version/juniper junos/20.4-r2-s1
- version/juniper junos/20.4-r2-s2
- version/juniper junos/20.4-r3
- version/juniper junos/21.1-r1
- version/juniper junos/21.1-r1-s1
- version/juniper junos/21.1-r2
- version/juniper junos/21.1-r2-s1
- version/juniper junos/21.2-r1
- version/juniper junos/21.2-r1-s1
- version/juniper junos/21.3-r1