-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS and IOS XE Software DHCP Client Denial of Service Vulnerability
Advisory ID: cisco-sa-20170322-dhcpc Revision: 1.0 For Public Release: 2017 March 22 16:00 GMT Last Updated: 2017 March 22 16:00 GMT CVE ID(s): CVE-2017-3864 CVSS Score v(3): 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H +--------------------------------------------------------------------- Summary ======= A vulnerability in the DHCP client implementation of Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition. 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-20170322-dhcpc ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-dhcpc";] This advisory is part of the March 22, 2017, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes five Cisco Security Advisories that describe five vulnerabilities. All the vulnerabilities have a Security Impact Rating of High. For a complete list of the advisories and links to them, see Cisco Event Response: March 2017 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-60851";]. -----BEGIN PGP SIGNATURE----- iQKBBAEBAgBrBQJY0qJpZBxDaXNjbyBTeXN0ZW1zIFByb2R1Y3QgU2VjdXJpdHkg SW5jaWRlbnQgUmVzcG9uc2UgVGVhbSAoQ2lzY28gUFNJUlQga2V5IDIwMTYtMjAx NykgPHBzaXJ0QGNpc2NvLmNvbT4ACgkQrz2APcQAkHmgUxAAr4fO4WKcJfWEA8O5 Nlj4U9E93ThFJpZErA2ikSNaWMzgXV2j9rxnUKpQbDICOWLzqlu7AuM2Gru9xrBe chLaLYOnoBf9Z4vA3qgT00IpCFSljoV524jyQCnxPtz8O6/LvA+Cq6EBw/oWfHG7 ZXeNS8sx6BoglqFuheuc62/3buvDzi6IvsszOB44YX0cxcII1v/91VxxO03sgixp 1Mp6c3hhsIbKNjCR4jYzh9xVNgCzqKylbqmkPL4I2O4kJdG26VHXJyVa/9rlpaNx uNPn7dH1nJtxbJB7uW9V/TR4zg+l4xleIqO+JUHSbh6Hsfhu3ZxPUnoNeeeh/hq6 PGhWHwAKqg0pErGAvxY/Srai2yYXdX+qw2ywy69Af3sDDK9g3EtronFof/aEnF/5 +tpdMTyX3kuw6BJhGUvgJluNLCOxidT8FKBglWG+T2LTXTJtz1y7vv9JCNI3i506 FttEVONbDpIk4LFhaIE9uG13NifTtPxq1N3lQHUGTKrCWPWjLMJ3tUJfDclu1vG0 N8/tZvtv6paKnIC+M3tC0EBYYfzNXxfbXDipWbnWLcyA4yY0BoDedJ5cV4X8aDyw U7ZzL/GHmD91DNtgxVjUDfOhgcc7Ce0UOfeaVvV1MzbLFMYhThIDOr74cNyN0Vlr joZYd+7JsSr+SHkmL7bWnRsNEbU= =Uk+n -----END PGP SIGNATURE-----
