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7.1
CVE-2024-21590: An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative doma...
CVE-2024-21590 · published 2 years ago
Summary
An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). ...
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| juniper | junos_os_evolved |
<= 21.2 21.2 21.4 22.2 22.3 22.4 23.2 23.4 cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* |
Original advisory text
An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative doma...
An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS).
When specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.
This issue affects Juniper Networks Junos OS:
* All versions before 21.2R3-S8-EVO;
* from 21.4-EVO before 21.4R3-S6-EVO;
* from 22.2-EVO before 22.2R3-S4-EVO;
* from 22.3-EVO before 22.3R3-S3-EVO;
* from 22.4-EVO before 22.4R3-EVO;
* from 23.2-EVO before 23.2R2-EVO.
* from 23.4-EVO before 23.4R1-S1-EVO.
When specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.
This issue affects Juniper Networks Junos OS:
* All versions before 21.2R3-S8-EVO;
* from 21.4-EVO before 21.4R3-S6-EVO;
* from 22.2-EVO before 22.2R3-S4-EVO;
* from 22.3-EVO before 22.3R3-S3-EVO;
* from 22.4-EVO before 22.4R3-EVO;
* from 23.2-EVO before 23.2R2-EVO.
* from 23.4-EVO before 23.4R1-S1-EVO.
References
- https://supportportal.juniper.net/JSA75728 Vendor Advisory
- https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N... Issue Tracking
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Type
CWE-20Improper Input Validation
Timeline
Published12 Apr 2024
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2024-21590 · NVD
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