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Category:   Device (Router/Bridge/Hub)  >   Cisco NX-OS Vendors:   Cisco
Cisco Nexus 7000 Series Lets Remote Users Bypass Certain Access Controls
SecurityTracker Alert ID:  1038049
SecurityTracker URL:  http://securitytracker.com/id/1038049
CVE Reference:   CVE-2017-3875   (Links to External Site)
Date:  Mar 15 2017
Impact:   Host/resource access via network
Vendor Confirmed:  Yes  
Version(s): Nexus 7000 Series
Description:   A vulnerability was reported in Cisco Nexus 7000 Series switches. A remote user can bypass certain access controls on the target system.

The system does not properly evaluate certain traffic when other access control list (ACL) rules are enabled. A remote user can send specially crafted data to bypass the access controls on the target system.

This can be exploited to bypass certain rulesets defined on a Network Time Protocol (NTP) ACL.

The vendor has assigned bug ID CSCtz59354 to this vulnerability.

Impact:   A remote user can bypass the firewall to access hosts or resources on the protected network.
Solution:   No solution was available at the time of this entry.

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-cns

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-cns (Links to External Site)
Cause:   Access control error

Message History:   None.


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