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7.5

An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a...

CVE-2023-22403 · published 3 years ago
Summary


An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).



On QFX10K Series, Inter-Chassis Control Protocol (ICCP) is used in MC-LAG ...

What to do
  • Update juniper junos to version 20.2 or later.
Affected software
VendorProductAffected versions
juniper junos < 20.2
20.2
20.4
21.1
21.2
21.3
21.4
22.1
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
Original advisory text
An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a...

An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).



On QFX10K Series, Inter-Chassis Control Protocol (ICCP) is used in MC-LAG topologies to exchange control information between the devices in the topology. ICCP connection flaps and sync issues will be observed due to excessive specific traffic to the local device.



This issue affects Juniper Networks Junos OS on QFX10K Series:

* All versions prior to 20.2R3-S7;
* 20.4 versions prior to 20.4R3-S4;
* 21.1 versions prior to 21.1R3-S3;
* 21.2 versions prior to 21.2R3-S1;
* 21.3 versions prior to 21.3R3;
* 21.4 versions prior to 21.4R3;
* 22.1 versions prior to 22.1R2.




References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-770Allocation of Resources Without Limits
Timeline
Published13 Jan 2023
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2023-22403 · NVD
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