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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
Juniper Junos Does Not Properly Enforce IPv4 Stateless Port Matching Filters
SecurityTracker Alert ID:  1031549
SecurityTracker URL:
CVE Reference:   CVE-2014-6383   (Links to External Site)
Date:  Jan 15 2015
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 13.3R3, 14.1R1, and 14.1R2; Trio-based PFE modules
Description:   A vulnerability was reported in Juniper Junos. A remote user can bypass firewall rules.

The IPv4 port matching filters do not properly detect matching packets. A remote user may be able to bypass stateless firewall filters.

Systems with Trio-based PFE modules (e.g., MX Series) are affected when running specific versions of Junos OS: 13.3R3, 14.1R1, and 14.1R2.

Impact:   A remote user can bypass firewall rules.
Solution:   The vendor has issued a fix (13.3R3-S3​, 13.3R4, 14.1R3, 14.2R1).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error, State error

Message History:   None.

 Source Message Contents

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