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CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

A vulnerability in the Layer 2 Tunneling Protocol (L2TP) parsing function of Cisco IOS (12.0 through 12.4 and 15.0 through 15.6) and Cisco IOS XE (3.1 through 3.18) could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient validation of L2TP packets. An attacker could exploit this vulnerability by sending a crafted L2TP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or Cisco IOS XE Software if the L2TP feature is enabled for the device and the device is configured as an L2TP Version 2 (L2TPv2) or L2TP Version 3 (L2TPv3) endpoint. • http://www.securityfocus.com/bid/97010 http://www.securitytracker.com/id/1038100 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-l2tp • CWE-399: Resource Management Errors CWE-400: Uncontrolled Resource Consumption •

CVSS: 7.1EPSS: 0%CPEs: 143EXPL: 0

A vulnerability in the Autonomic Networking Infrastructure (ANI) feature of Cisco IOS Software (15.4 through 15.6) and Cisco IOS XE Software (3.7 through 3.18, and 16) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to a device that is running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature. A device must meet two conditions to be affected by this vulnerability: (1) the device must be running a version of Cisco IOS Software or Cisco IOS XE Software that supports ANI (regardless of whether ANI is configured); and (2) the device must have a reachable IPv6 interface. An exploit could allow the attacker to cause the affected device to reload. • http://www.securityfocus.com/bid/96971 http://www.securitytracker.com/id/1038065 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6 • CWE-20: Improper Input Validation •

CVSS: 7.4EPSS: 0%CPEs: 161EXPL: 0

A vulnerability in the Autonomic Networking Infrastructure (ANI) registrar feature of Cisco IOS Software (possibly 15.2 through 15.6) and Cisco IOS XE Software (possibly 3.7 through 3.18, and 16) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted autonomic network channel discovery packet to a device that has all the following characteristics: (1) running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature; (2) configured as an autonomic registrar; (3) has a whitelist configured. An exploit could allow the attacker to cause the affected device to reload. Note: Autonomic networking should be configured with a whitelist. • http://www.securityfocus.com/bid/96972 http://www.securitytracker.com/id/1038064 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-ani • CWE-20: Improper Input Validation •

CVSS: 2.5EPSS: 0%CPEs: 10EXPL: 0

A vulnerability in the package unbundle utility of Cisco IOS XE Software could allow an authenticated, local attacker to gain write access to some files in the underlying operating system. This vulnerability affects the following products if they are running a vulnerable release of Cisco IOS XE Software: Cisco 5700 Series Wireless LAN Controllers, Cisco Catalyst 3650 Series Switches, Cisco Catalyst 3850 Series Switches, Cisco Catalyst 4500E Series Switches, Cisco Catalyst 4500X Series Switches. More Information: CSCva60013 CSCvb22622. Known Affected Releases: 3.7(0) 16.4.1 Denali-16.1.3 Denali-16.2.2 Denali-16.3.1. Known Fixed Releases: 15.2(4)E3 16.1(2.208) 16.2(2.42) 16.3(1.22) 16.4(0.190) 16.5(0.29). • http://www.securityfocus.com/bid/94340 http://www.securitytracker.com/id/1037299 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161115-iosxe • CWE-20: Improper Input Validation •

CVSS: 8.3EPSS: 0%CPEs: 3334EXPL: 0

The DNS forwarder in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.15 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (data corruption or device reload) via a crafted DNS response, aka Bug ID CSCup90532. El redireccionador de DNS en Cisco IOS 12.0 hasta la versión 12.4 y 15.0 hasta la versión 15.6 e IOS XE 3.1 hasta la versión 3.15 permite a atacantes remotos obtener información sensible de la memoria del proceso o provocar una denegación de servicio (corrupción de datos o reinicio del dispositivo) a través de una respuesta DNS manipulada, vulnerabilidad también conocida como Bug ID CSCup90532. • http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns http://www.securityfocus.com/bid/93201 http://www.securitytracker.com/id/1036914 https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04 • CWE-20: Improper Input Validation •