7.8 - cisco-sa-20180328-ipv4

A vulnerability in the IP Version 4 (IPv4) processing code of Cisco IOS XE Software running on Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition.

The vulnerability is due to incorrect processing of certain IPv4 packets. An attacker could exploit this vulnerability by sending specific IPv4 packets to an IPv4 address on an affected device. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. If the switch does not reboot when under attack, it would require manual intervention to reload the device.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ipv4 ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ipv4"] This advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-66682"].

BEGIN PGP SIGNATURE

iQJ5BAEBAgBjBQJau703XBxDaXNjbyBQcm9kdWN0IFNlY3VyaXR5IEluY2lkZW50 IFJlc3BvbnNlIFRlYW0gKENpc2NvIFBTSVJUIGtleSAyMDE4LTIwMTkpIDxwc2ly dEBjaXNjby5jb20+AAoJEJa12PPJBfcz/I8QAKUUCqR2plvVdhggbCLKwLfwSdei nyfdfM4ccwqLs5fiAcHbpr2ZIQFwoVsouWLVR572TsgxW/MbHLEQshFzIJ/n/JUW r6qvA5vAuTECKAGB4bS8uzdJ3AdQAy/5lwzrpUyJPaDV4F35OnXuH31Wc+NVuTg4 EeDs3H7GtmhIBuUAmjPz1fC1eMV7xApRVQNJljUqRT/vrOK4lbID+Wnw4TbIBZ39 XWUgbJ3WtO12rgDG6bIgvBFEk6KV5bLjLAYXUFRAE4kQtSpdGn/rd0YcrrsM3et3 nmF+pGgpcKCTwYoU2zRVtvFsEtKCd61iH3GgEF3jxSM7U0Hhbrq/bvuEW4eoHPH5 X8egsjk06rAAeY9STrF5u90/CfFqBXrthuNShswlVQbo1fBe3lu6L6abzHT1NTTK iArFwuEjbayWyb/FCukeujGqvz1gTux1NL9Uep5jVpAGRMC+9jYfAgs4GfCxY8xV L1cqNKh50aU+rwdENgpDENwS+w4gYou7YkTWhj8dvx3AXmfJ+mK98G8zq+z/6J7Y pHKjvO/sk0zYiisP+/jj1/TawkIyNv0Jm6B1hZv3TKPF/7jXtMUbLI6AgMmkyetQ YDU5PN6Th+11CrrwgCLR+u8bOGbgNvUDLMVxCKQNY/P1E0Yxw8WXUej8zNCAiK7B nu9Ch6I0hot2gKUC =UqTf END PGP SIGNATURE

_______________________________________________ cust-security-announce mailing list cust-security-announce@cisco.com To unsubscribe, send the command "unsubscribe" in the subject of your message to cust-security-announce-leave@cisco.com