This issue can affect all MX Series and T4000 routers using either Trio or Cassis-based PFEs.

2014-04-10 Update: Added T4000 and Type 5 FPCs (T4000-FPC5-3D) to advisory.A crafted IP packet destined to an MX Series or T4000 router utilizing Trio or Cassis-based PFE (Packet Forwarding Engine) modules can cause the PFE to reboot. Affected modules include MPC1, MPC2, MPC3, and MPC4, integrated MPCs (CHAS-MX*), as well as Type 5 FPCs on the T4000. For a complete list of Trio and Cassis-based PFE modules, refer to KB25385.Customers can display the various components in use via the ‘show chassis hardware’ command.Juniper SIRT is not aware of any malicious exploitation of this vulnerability.No other Juniper Networks products or platforms are affected by this issue.This issue has been assigned CVE-2014-2713.

The following software releases have been updated to resolve this specific issue:All Junos OS software releases built on or after 2014-03-20, orJunos OS 11.4R11, 12.1R9, 12.2R7, 12.3R4-S3, 12.3R5, 13.1R4, 13.2R2, and 13.3R1, and all subsequent releases (i.e. all releases built after 13.3R1).Customers can confirm the build date of any Junos OS release by issuing the command ‘show version detail’.This issue is being tracked as PR 904887 and is visible on the Customer Support website.KB16765 – “In which releases are vulnerabilities fixed?” describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.

No known workaround exists for this issue.

How to obtain fixed software:Security vulnerabilities in Junos are fixed in the next available Maintenance Release of each supported Junos version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, Service Releases are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and Service Releases contain fixes for the issues described. Upon request to JTAC, customers will be provided download instructions for a Service Release. Although Juniper does not provide formal Release Note documentation for a Service Release, a list of “PRs fixed” can be provided on request.

Information for how Juniper Networks uses CVSS can be found at KB 16446 “Common Vulnerability Scoring System (CVSS) and Juniper’s Security Advisories.”

Leave a Reply