CVE-2023-36835: Junos OS: QFX10000 Series: All traffic will be dropped after a specific valid IP packet has been received which needs to be routed over a VXLAN tunnel
First published: Fri Jul 14 2023(Updated: )
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on QFX10000 Series allows a network based attacker to cause a Denial of Service (DoS). If a specific valid IP packet is received and that packet needs to be routed over a VXLAN tunnel, this will result in a PFE wedge condition due to which traffic gets impacted. As this is not a crash and restart scenario, this condition will persist until the system is rebooted to recover. This issue affects Juniper Networks Junos OS on QFX10000: 20.3 version 20.3R1 and later versions; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S5; 21.2 versions prior to 21.2R3-S5; 21.3 versions prior to 21.3R3-S4; 21.4 versions prior to 21.4R3-S1; 22.1 versions prior to 22.1R3; 22.2 versions prior to 22.2R2; 22.3 versions prior to 22.3R1-S2, 22.3R2.
Credit: sirt@juniper.net sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =20.3-r1 | |
| Juniper JUNOS | =20.3-r1-s1 | |
| Juniper JUNOS | =20.3-r1-s2 | |
| Juniper JUNOS | =20.3-r2 | |
| Juniper JUNOS | =20.3-r2-s1 | |
| Juniper JUNOS | =20.3-r3 | |
| Juniper JUNOS | =20.3-r3-s1 | |
| Juniper JUNOS | =20.3-r3-s2 | |
| Juniper JUNOS | =20.3-r3-s3 | |
| Juniper JUNOS | =20.3-r3-s4 | |
| Juniper JUNOS | =20.3-r3-s5 | |
| Juniper JUNOS | =20.3-r3-s6 | |
| 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 | =21.1 | |
| 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 | =21.2 | |
| 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 | =21.3 | |
| 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 | =21.4 | |
| 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 | =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 | =22.2-r1 | |
| Juniper JUNOS | =22.2-r1-s1 | |
| Juniper JUNOS | =22.2-r1-s2 | |
| Juniper JUNOS | =22.3-r1 | |
| Juniper JUNOS | =22.3-r1-s1 | |
| Juniper Qfx10002 | ||
| Juniper Qfx10002-60c | ||
| Juniper Qfx10008 | ||
| Juniper Qfx10016 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S5, 21.1R3-S5, 21.2R3-S5, 21.3R3-S4, 21.4R3-S1, 22.1R3, 22.2R2, 22.3R1-S2, 22.3R2, 22.4R1, 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-latest
- collector/nvd-api
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/weakness
- agent/title
- agent/references
- agent/last-modified-date
- agent/severity
- agent/first-publish-date
- agent/event
- agent/description
- agent/tags
- vendor/juniper
- canonical/juniper junos
- version/juniper junos/20.3-r1
- version/juniper junos/20.3-r1-s1
- version/juniper junos/20.3-r1-s2
- 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/20.3-r3-s2
- version/juniper junos/20.3-r3-s3
- version/juniper junos/20.3-r3-s4
- version/juniper junos/20.3-r3-s5
- version/juniper junos/20.3-r3-s6
- version/juniper junos/20.4
- 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/20.4-r3-s1
- version/juniper junos/20.4-r3-s2
- version/juniper junos/20.4-r3-s3
- version/juniper junos/20.4-r3-s4
- version/juniper junos/21.1
- 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/21.1-r2-s2
- version/juniper junos/21.1-r3
- version/juniper junos/21.1-r3-s1
- version/juniper junos/21.1-r3-s2
- version/juniper junos/21.1-r3-s3
- version/juniper junos/21.1-r3-s4
- version/juniper junos/21.2
- version/juniper junos/21.2-r1
- version/juniper junos/21.2-r1-s1
- version/juniper junos/21.2-r1-s2
- version/juniper junos/21.2-r2
- version/juniper junos/21.2-r2-s1
- version/juniper junos/21.2-r2-s2
- version/juniper junos/21.2-r3
- version/juniper junos/21.2-r3-s1
- version/juniper junos/21.2-r3-s2
- version/juniper junos/21.2-r3-s3
- version/juniper junos/21.2-r3-s4
- 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/21.3-r3-s2
- version/juniper junos/21.3-r3-s3
- 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/21.4-r2-s2
- version/juniper junos/21.4-r3
- version/juniper junos/22.1-r1
- version/juniper junos/22.1-r1-s1
- version/juniper junos/22.1-r1-s2
- version/juniper junos/22.1-r2
- version/juniper junos/22.1-r2-s1
- version/juniper junos/22.1-r2-s2
- version/juniper junos/22.2-r1
- version/juniper junos/22.2-r1-s1
- version/juniper junos/22.2-r1-s2
- version/juniper junos/22.3-r1
- version/juniper junos/22.3-r1-s1
- canonical/juniper qfx10002
- canonical/juniper qfx10002-60c
- canonical/juniper qfx10008
- canonical/juniper qfx10016