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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS XE NAT SIP Translation Error Lets Remote Users Cause the Target Device to Reload
SecurityTracker Alert ID:  1041734
SecurityTracker URL:  https://securitytracker.com/id/1041734
CVE Reference:   CVE-2018-0476   (Links to External Site)
Date:  Sep 28 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Cisco IOS XE. A remote user can cause the target device to reload.

A remote user can send specially crafted Network Address Translation (NAT) Session Initiation Protocol (SIP) data through the target Cisco IOS XE device via UDP port 5060 to trigger a flaw in the Application Layer Gateway and cause the device to reload.

The vendor has assigned bug ID CSCvg89036 to this vulnerability.

Impact:   A remote user can cause the target device to reload.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-alg

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-alg (Links to External Site)
Cause:   State error

Message History:   None.


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