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Email addresssecurity at cisco.com
First Active2003-12-03
Last Active2017-03-22
Cisco Security Advisory 20170322-iox
Posted Mar 22, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Data-in-Motion (DMo) process installed with the Cisco IOx application environment could allow an unauthenticated, remote attacker to cause a stack overflow that could allow remote code execution with root privileges in the virtual instance running on an affected device. The vulnerability is due to insufficient bounds checking in the DMo process. An attacker could exploit this vulnerability by sending crafted packets that are forwarded to the DMo process for evaluation. The impacts of a successful exploit are limited to the scope of the virtual instance and do not impact the router that is hosting Cisco IOx. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, overflow, root, code execution
systems | cisco
advisories | CVE-2017-3853
MD5 | db1158a1833f92338a1506959e37f3e0
Cisco Security Advisory 20170322-ztp
Posted Mar 22, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the DHCP code for the Zero Touch Provisioning feature of Cisco ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a format string vulnerability when processing a crafted DHCP packet for Zero Touch Provisioning. An attacker could exploit this vulnerability by sending a specially crafted DHCP packet to an affected device. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service
systems | cisco
advisories | CVE-2017-3859
MD5 | e1d8a64df5c5d1e4358f2c447f147794
Cisco Security Advisory 20170322-l2tp
Posted Mar 22, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Layer 2 Tunneling Protocol (L2TP) parsing function of Cisco IOS and Cisco IOS XE Software 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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service, protocol
systems | cisco, osx
advisories | CVE-2017-3857
MD5 | 8e211358e033468251f63614e5b2fb40
Cisco Security Advisory 20170322-dhcpc
Posted Mar 22, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - 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.

tags | advisory, remote, denial of service
systems | cisco, osx
advisories | CVE-2017-3864
MD5 | 93df32052601d328373b0ac491815e96
Cisco Security Advisory 20170317-cmp
Posted Mar 17, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: The failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device, and The incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. Cisco will release software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, arbitrary, local, protocol
systems | cisco, osx
advisories | CVE-2017-3881
MD5 | e95dfb301f191a5ec25fd4391f2377a8
Cisco Security Advisory 20170315-tes
Posted Mar 16, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Client Manager Server of Cisco Workload Automation and Cisco Tidal Enterprise Scheduler could allow an unauthenticated, remote attacker to retrieve any file from the Client Manager Server. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted URL to the Client Manager Server. An exploit could allow the attacker to retrieve any file from the Cisco Workload Automation or Cisco Tidal Enterprise Scheduler Client Manager Server. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote
systems | cisco
advisories | CVE-2017-3846
MD5 | af82f329130248200b1336e3f5f2352f
Cisco Security Advisory 20170315-ap1800
Posted Mar 16, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the web-based GUI of Cisco Mobility Express 1800 Series Access Points could allow an unauthenticated, remote attacker to bypass authentication. The attacker could be granted full administrator privileges. The vulnerability is due to improper implementation of authentication for accessing certain web pages using the GUI interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface of the affected system. A successful exploit could allow the attacker to bypass authentication and perform unauthorized configuration changes or issue control commands to the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, web
systems | cisco
advisories | CVE-2017-3831
MD5 | f6bae90e152cbbf5e0435cc32c45a8d3
Cisco Security Advisory 20170315-asr
Posted Mar 16, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Cisco ASR 5000 Series, ASR 5500 Series, ASR 5700 Series devices, and Cisco Virtualized Packet Core could allow an authenticated, remote attacker to gain unrestricted, root shell access. The vulnerability is due to missing input validation of parameters passed during SSH or SFTP login. An attacker could exploit this vulnerability by providing crafted user input to the SSH or SFTP command-line interface (CLI) during SSH or SFTP login. An exploit could allow an authenticated attacker to gain root privileges access on the router. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered via both IPv4 and IPv6 traffic. An established TCP connection toward port 22, the SSH default port, is needed to perform the attack. The attacker must have valid credentials to login to the system via SSH or SFTP. Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.

tags | advisory, remote, shell, root, tcp
systems | cisco
advisories | CVE-2017-3819
MD5 | b5b7b2652bcc9f39211a3ec6419b9ab3
Cisco Security Advisory 20170215-ucs
Posted Feb 16, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the web-based GUI of Cisco UCS Director could allow an authenticated, local attacker to execute arbitrary workflow items with just an end-user profile. The vulnerability is due to improper role-based access control (RBAC) after the Developer Menu is enabled in Cisco UCS Director. Attackers could exploit this vulnerability by enabling Developer Mode for their user profile with an end-user profile and then adding new catalogs with arbitrary workflow items to the profile. An exploit could allow attackers to perform any actions defined by these workflow items, including actions affecting other tenants. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, web, arbitrary, local
systems | cisco
MD5 | f7eb1304aa8fe123c845e987875b52da
Cisco Security Response 20170214-smi
Posted Feb 15, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Response - Several researchers have reported on the use of Smart Install (SMI) protocol messages toward Smart Install clients, also known as integrated branch clients (IBC), allowing an unauthenticated, remote attacker to change the startup-config file and force a reload of the device, upgrade the IOS image on the device, and execute high-privilege CLI commands on switches running Cisco IOS and IOS XE Software. Cisco does not consider this a vulnerability in Cisco IOS, IOS XE, or the Smart Install feature itself but a misuse of the Smart Install protocol that by design does not require authentication.

tags | advisory, remote, protocol
systems | cisco, osx, ios
MD5 | c96bbaa757e47e6830e465936de741d3
Cisco Security Advisory 20170208-asa
Posted Feb 11, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in Common Internet Filesystem (CIFS) code in the Clientless SSL VPN functionality of Cisco ASA Software could allow an authenticated, remote attacker to cause a heap overflow. The vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by sending a crafted URL to the affected system. An exploit could allow the remote attacker to cause a reload of the affected system or potentially execute code. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed firewall mode only and in single or multiple context mode. This vulnerability can be triggered by IPv4 or IPv6 traffic. A valid TCP connection is needed to perform the attack. The attacker needs to have valid credentials to log in to the Clientless SSL VPN portal.

tags | advisory, remote, overflow, tcp
systems | cisco
MD5 | f831147a2edbb6ec039b98b931f28855
Cisco Security Advisory 20170208-anyconnect
Posted Feb 11, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Start Before Logon (SBL) module of Cisco AnyConnect Secure Mobility Client Software for Windows could allow an unauthenticated, local attacker to open Internet Explorer with the privileges of the SYSTEM user. The vulnerability is due to insufficient implementation of the access controls. An attacker could exploit this vulnerability by opening the Internet Explorer browser. An exploit could allow the attacker to use Internet Explorer with the privileges of the SYSTEM user. This may allow the attacker to execute privileged commands on the targeted system.

tags | advisory, local
systems | cisco, windows
MD5 | f2746610538cc78270790177cd7df12a
Cisco Security Advisory 20170201-prime-home
Posted Feb 2, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the web-based GUI of Cisco Prime Home could allow an unauthenticated, remote attacker to bypass authentication and execute actions with administrator privileges. The vulnerability is due to a processing error in the role-based access control (RBAC) of URLs. An attacker could exploit this vulnerability by sending API commands via HTTP to a particular URL without prior authentication. An exploit could allow the attacker to perform any actions in Cisco Prime Home with administrator privileges. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, web
systems | cisco
MD5 | f5338e30e3ad4b926849dfe222bde208
Cisco Security Advisory 20170125-telepresence
Posted Jan 26, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability is due to improper size validation when reassembling fragmented IPv4 or IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv4 or IPv6 fragments to a port receiving content in Passthrough content mode. An exploit could allow the attacker to overflow a buffer. If successful, the attacker could execute arbitrary code or cause a DoS condition on the affected system. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel
systems | cisco
MD5 | 348a09172a4d9eba7d6a5abfb2e3410c
Cisco Security Advisory 20170125-expressway
Posted Jan 26, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service, overflow, protocol
systems | cisco
MD5 | 55434a5452720fa88174f8cef74a5281
Cisco Security Advisory 20170125-cas
Posted Jan 26, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the data plane IP fragment handler of the Adaptive Security Appliance (ASA) CX Context-Aware Security module could allow an unauthenticated, remote attacker to cause the CX module to be unable to process further traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of IP fragments. An attacker could exploit this vulnerability by sending fragmented IP traffic across the CX module. An exploit could allow the attacker to exhaust free packet buffers in shared memory (SHM), causing the CX module to be unable to process further traffic, resulting in a DoS condition. Cisco has not released and will not release software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service
systems | cisco
MD5 | e7bf287db9bafdc598710f3f6472d96f
Cisco Security Advisory 20170124-webex
Posted Jan 24, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Cisco WebEx browser extensions provided by Cisco WebEx Meetings Server and Cisco WebEx Meetings Center could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. The vulnerability is due to the use of a crafted pattern by the affected software. An attacker could exploit this vulnerability by directing a user to a web page that contains the crafted pattern and starting a WebEx session. The WebEx session could allow the attacker to execute arbitrary code on the affected system, which could be used to conduct further attacks. Cisco has begun to release software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, web, arbitrary
systems | cisco
MD5 | 088f50565f7b84d228e21059275699e0
Cisco Security Advisory 20161102-cms
Posted Nov 4, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in Cisco Meeting Server and Meeting App could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. The vulnerability exists because the software does not perform sufficient boundary checks on user-supplied data. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted IPv6 input to the vulnerable function. A successful exploit could result in an exploitable buffer underflow condition. An attacker could leverage this buffer underflow condition to incorrectly allocate memory and cause a reload of the device or execute arbitrary code with the privileges of the affected application. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.

tags | advisory, remote, arbitrary
systems | cisco
MD5 | 60d814e76d3f23639f4b34193463bfeb
Cisco Security Advisory 20161102-tl1
Posted Nov 4, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Transaction Language 1 (TL1) code of Cisco ASR 900 Series routers could allow an unauthenticated, remote attacker to cause a reload of, or remotely execute code on, the affected system. The vulnerability exists because the affected software performs incomplete bounds checks on input data. An attacker could exploit this vulnerability by sending a malicious request to the TL1 port, which could cause the device to reload. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or cause a reload of the affected system. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

tags | advisory, remote, arbitrary
systems | cisco
MD5 | 668aa930a9a6fc860efaf71ac8609cdd
Cisco Security Advisory 20161019-asa-idfw
Posted Oct 19, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Identity Firewall feature of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to a buffer overflow in the affected code area. An attacker could exploit this vulnerability by sending a crafted NetBIOS packet in response to a NetBIOS probe sent by the ASA software. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or cause a reload of the affected system. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed and transparent firewall mode and in single or multiple context mode. This vulnerability can be triggered by IPv4 traffic. Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.

tags | advisory, remote, overflow, arbitrary
systems | cisco
MD5 | 797b6f8f7813d0900195378134022881
Cisco Security Advisory 20161012-msc
Posted Oct 12, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) service of the Cisco Meeting Server (CMS) could allow an unauthenticated, remote attacker to masquerade as a legitimate user. This vulnerability is due to the XMPP service incorrectly processing a deprecated authentication scheme. A successful exploit could allow an attacker to access the system as another user. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability in some environments are available.

tags | advisory, remote, protocol
systems | cisco
MD5 | 1deab8901a19c75018a4cd411342849d
Cisco Security Advisory 20161005-bgp
Posted Oct 5, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the Border Gateway Protocol (BGP) implementation of Cisco NX-OS System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the device unexpectedly reloading. The vulnerability is due to incomplete input validation of the BGP update messages. An attacker could exploit this vulnerability by sending a crafted BGP update message to the targeted device. An exploit could allow the attacker to cause the switch to reload unexpectedly.

tags | advisory, remote, denial of service, protocol
systems | cisco
MD5 | 9fc4e49d47735f735bf881b995176b39
Cisco Security Advisory 20161005-dhcp2
Posted Oct 5, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the implementation of the DHCPv4 relay agent in Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of malformed DHCPv4 packets. An attacker could exploit this vulnerability by sending malformed DHCPv4 packets to an affected device. An exploit could allow the attacker to cause the DHCP process or device to crash. This vulnerability can be exploited using IPv4 packets only. The vulnerability can be triggered by malformed DHCP packets processed by a DHCP relay agent listening on the device, using the IPv4 broadcast address or IPv4 unicast address of any interface configured on a device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service
systems | cisco
MD5 | bdbcf42c7f507401c5ed01a9f326b0bb
Cisco Security Advisory 20161005-dhcp1
Posted Oct 5, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the implementation of the DHCPv4 relay agent and smart relay agent in Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of crafted DHCPv4 offer packets. An attacker could exploit this vulnerability by sending crafted DHCPv4 offer packets to an affected device. An exploit could allow the attacker to cause the DHCP process or device to crash. This vulnerability can be exploited using IPv4 packets only. The vulnerability can be triggered by crafted DHCP packets processed by a DHCP relay agent or smart relay agent listening on the device using the IPv4 broadcast address or the IPv4 unicast address of any interface configured on a device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, denial of service
systems | cisco
MD5 | d3eff152bfb27d8637de788d68688d40
Cisco Security Advisory 20161005-nxaaa
Posted Oct 5, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the SSH subsystem of the Cisco Nexus family of products could allow an authenticated, remote attacker to bypass authentication, authorization, and accounting (AAA) restrictions. The vulnerability is due to the improper processing of certain parameters that are passed to an affected device during the negotiation of an SSH connection. An attacker could exploit this vulnerability by authenticating to an affected device and passing a malicious value as part of the login procedure. A successful exploit could allow an attacker to bypass AAA restrictions and execute commands on the device command-line interface (CLI) that should be restricted to a different privileged user role. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote
systems | cisco
MD5 | cc72ee4edc339277831af2664c976bc3
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