Saturday, October 16, 2021

Juniper Junos OS: 2021-10 Security Bulletin: Junos OS: MX Series: Traffic drops will be observed if MS-MPC/MS-PIC resources are consumed by certain traffic causing a partial DoS (JSA11231) (CVE-2021-31369)

Description
On MX Series platforms with MS-MPC/MS-MIC, an Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated network attacker to cause a partial Denial of Service (DoS) with a high rate of specific traffic. If a Class of Service (CoS) rule is attached to the service-set and a high rate of specific traffic is processed by this service-set, for some of the other traffic which has services applied and is being processed by this MS-MPC/MS-MIC drops will be observed.
Solution(s)
  • juniper-junos-os-upgrade-latest


  • References
  • https://attackerkb.com/topics/cve-2021-31369
  • CVE - 2021-31369
  • JSA11231




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