The play/modules component in Cisco WebEx Meetings Server allows remote attackers to obtain administrator access via crafted API requests, aka Bug ID CSCuj40421.

The remote-access VPN implementation in Cisco Adaptive Security Appliance (ASA) Software 7.x before 7.2(5.12), 8.x before 8.2(5.46), 8.3.x before 8.3(2.39), 8.4.x before 8.4(6), 8.6.x before 8.6(1.12), 9.0.x before 9.0(3.1), and 9.1.x before 9.1(2.5), when an override-account-disable option is enabled, does not properly parse AAA LDAP responses, which allows remote attackers to bypass authentication via a VPN connection attempt, aka Bug ID CSCug83401.

Unspecified vulnerability in Cisco Unity 4.x before 4.2(1)ES161, 5.x before 5.0(1)ES53, and 7.x before 7.0(2)ES8, when using anonymous authentication (aka native Unity authentication), allows remote attackers to bypass authentication and read or modify system configuration parameters by going to a specific link more than once.

The Adaptive Security Device Management (ASDM) remote-management feature in Cisco Adaptive Security Appliance (ASA) Software 8.2.x before 8.2(5.46), 8.3.x before 8.3(2.39), 8.4.x before 8.4(6), 8.5.x before 8.5(1.18), 8.6.x before 8.6(1.12), 8.7.x before 8.7(1.7), 9.0.x before 9.0(3.1), and 9.1.x before 9.1(2.6) does not properly implement the authentication-certificate option, which allows remote attackers to bypass authentication via a TCP session to an ASDM interface, aka Bug ID CSCuh44815.

The authentication manager process in the web framework in Cisco Intrusion Prevention System (IPS) does not properly handle user tokens, which allows remote attackers to cause a denial of service (intermittent MainApp hang) via a crafted management-interface connection request, aka Bug ID CSCuf20148.

Cisco Video Surveillance Manager (VSM) before 7.0.0 allows remote attackers to obtain sensitive configuration, archive, and log information via unspecified vectors, related to the Cisco_VSBWT (aka Broadware sample code) package, aka Bug ID CSCsv37288.

Cisco Video Surveillance Manager (VSM) before 7.0.0 does not require authentication for access to VSMC monitoring pages, which allows remote attackers to obtain sensitive configuration, archive, and log information via unspecified vectors, related to the Cisco_VSBWT (aka Broadware sample code) package, aka Bug ID CSCsv40169.

A vulnerability in the Cisco IOS XE Software REST API could allow an authenticated, remote attacker to bypass API authorization checks and use the API to perform privileged actions on an affected device. The vulnerability is due to insufficient authorization checks for requests that are sent to the REST API of the affected software. An attacker could exploit this vulnerability by sending a malicious request to an affected device via the REST API. A successful exploit could allow the attacker to selectively bypass authorization checks for the REST API of the affected software and use the API to perform privileged actions on an affected device. Cisco Bug IDs: CSCuz56428.

A vulnerability in the API gateway of the Cisco Digital Network Architecture (DNA) Center could allow an unauthenticated, remote attacker to bypass authentication and access critical services. The vulnerability is due to a failure to normalize URLs prior to servicing requests. An attacker could exploit this vulnerability by submitting a crafted URL designed to exploit the issue. A successful exploit could allow the attacker to gain unauthenticated access to critical services, resulting in elevated privileges in DNA Center. This vulnerability affects Cisco DNA Center Software Releases prior to 1.1.2. Cisco Bug IDs: CSCvi09394.

Cisco Linksys E4200 1.0.05 Build 7 devices contain a Security Bypass Vulnerability which could allow remote attackers to gain unauthorized access.

A vulnerability in the 802.1x multiple-authentication (multi-auth) feature of Cisco IOS Software could allow an unauthenticated, adjacent attacker to bypass the authentication phase on an 802.1x multi-auth port. The vulnerability is due to a logic change error introduced into the code. An attacker could exploit this vulnerability by trying to access an 802.1x multi-auth port after a successful supplicant has authenticated. An exploit could allow the attacker to bypass the 802.1x access controls and obtain access to the network. Cisco Bug IDs: CSCvg69701.

The ISM module in Cisco IOS on ISR G2 routers does not properly handle authentication-header packets, which allows remote authenticated users to cause a denial of service (module reload) via a series of malformed packets, aka Bug ID CSCub92025.

The Location Bandwidth Manager (LBM) Intracluster-communication feature in Cisco Unified Communications Manager (CUCM) 9.x before 9.1(1) does not require authentication from the remote LBM Hub node, which allows remote attackers to conduct cache-poisoning attacks against transaction records, and cause a denial of service (bandwidth-pool consumption and call outage), via unspecified vectors, aka Bug ID CSCub28920.

The Real-Time Information Server (RIS) Data Collector service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) and 6.x before 6.1(1) allows remote attackers to bypass authentication, and obtain cluster configuration information and statistics, via a direct TCP connection to the service port, aka Bug ID CSCsj90843.

The encryption functionality in the Virtual Supervisor Module (VSM) to Virtual Ethernet Module (VEM) communication component in Cisco NX-OS on the Nexus 1000V does not properly authenticate VSM/VEM packets, which allows remote attackers to disable packet-level encryption and integrity protection via crafted packets, aka Bug ID CSCud14710.

The authentication-proxy implementation on Cisco Adaptive Security Appliances (ASA) devices with software 7.x before 7.2(5.10), 8.0 before 8.0(5.31), 8.1 and 8.2 before 8.2(5.38), 8.3 before 8.3(2.37), 8.4 before 8.4(5.3), 8.5 and 8.6 before 8.6(1.10), 8.7 before 8.7(1.4), 9.0 before 9.0(1.1), and 9.1 before 9.1(1.2) allows remote attackers to cause a denial of service (device reload) via a crafted URL, aka Bug ID CSCud16590.

The auth-proxy functionality in Cisco Firewall Services Module (FWSM) software 3.1 and 3.2 before 3.2(20.1), 4.0 before 4.0(15.2), and 4.1 before 4.1(5.1) allows remote attackers to cause a denial of service (device reload) via a crafted URL, aka Bug ID CSCtg02624.

Session fixation vulnerability in Cisco Secure Access Control System (ACS) allows remote attackers to hijack web sessions via unspecified vectors, aka Bug ID CSCud95787.

Cisco NX-OS on the Nexus 1000V does not properly handle authentication for Virtual Ethernet Module (VEM) to Virtual Supervisor Module (VSM) communication, which allows remote attackers to obtain VEM access via (1) spoofed STUN packets or (2) a crafted VMware ESXi instance, aka Bug ID CSCud14832.

Cisco Unified Communications Manager (CUCM) does not properly limit the rate of authentication attempts, which allows remote attackers to cause a denial of service (application slowdown) via a series of requests, aka Bug ID CSCud39515.

The Disaster Recovery Framework (DRF) master server in Cisco Unified Communications products, including Unified Communications Manager (CUCM) 5.x and 6.x, Unified Presence 1.x and 6.x, Emergency Responder 2.x, and Mobility Manager 2.x, does not require authentication for requests received from the network, which allows remote attackers to execute arbitrary code via unspecified vectors.

SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.

A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Services Framework could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted device. The vulnerability is due to an insecure default configuration of the Apache ZooKeeper service used by the affected software. An attacker could exploit this vulnerability by accessing the affected device through the orchestrator network. An exploit could allow the attacker to gain access to ZooKeeper data nodes (znodes) and influence the behavior of the system's high-availability feature. This vulnerability affects all releases of Cisco Ultra Services Framework UAS prior to Releases 5.0.3 and 5.1. Cisco Bug IDs: CSCvd29395.

A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance running Release 1.3, 1.4, 2.0.0, 2.0.1, or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.

A vulnerability in the management of shell user accounts for Cisco Policy Suite (CPS) Software for CPS appliances could allow an authenticated, local attacker to gain elevated privileges on an affected system. The affected privilege level is not at the root level. The vulnerability is due to incorrect role-based access control (RBAC) for shell user accounts. An attacker could exploit this vulnerability by authenticating to an affected appliance and providing crafted user input via the CLI. A successful exploit could allow the attacker to acquire a higher privilege level than should have been granted. To exploit this vulnerability, the attacker must log in to the appliance with valid credentials. Cisco Bug IDs: CSCve37724. Known Affected Releases: 9.0.0, 9.1.0, 10.0.0, 11.0.0, 12.0.0.

A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) service of Cisco Unified Contact Center Express (UCCx) could allow an unauthenticated, remote attacker to masquerade as a legitimate user, aka a Clear Text Authentication Vulnerability. More Information: CSCuw86638. Known Affected Releases: 10.6(1). Known Fixed Releases: 11.5(1.10000.61).

A vulnerability in the web console of the Cisco Cloud Services Platform (CSP) 2100 could allow an authenticated, remote attacker to interact maliciously with the services or virtual machines (VMs) operating remotely on an affected CSP device. The vulnerability is due to weaknesses in the generation of certain authentication mechanisms in the URL of the web console. An attacker could exploit this vulnerability by browsing to one of the hosted VMs' URLs in Cisco CSP and viewing specific patterns that control the web application's mechanisms for authentication control. An exploit could allow the attacker to access a specific VM on the CSP, which causes a complete loss of the system's confidentiality, integrity, and availability. This vulnerability affects Cisco Cloud Services Platform (CSP) 2100 running software release 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, or 2.2.2. Cisco Bug IDs: CSCve64690.

A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System software platform could allow an unauthenticated, remote attacker to gain unauthorized, elevated access to an affected device. The vulnerability occurs when a refresh upgrade (RU) or Prime Collaboration Deployment (PCD) migration is performed on an affected device. When a refresh upgrade or PCD migration is completed successfully, an engineering flag remains enabled and could allow root access to the device with a known password. If the vulnerable device is subsequently upgraded using the standard upgrade method to an Engineering Special Release, service update, or a new major release of the affected product, this vulnerability is remediated by that action. Note: Engineering Special Releases that are installed as COP files, as opposed to the standard upgrade method, do not remediate this vulnerability. An attacker who can access an affected device over SFTP while it is in a vulnerable state could gain root access to the device. This access could allow the attacker to compromise the affected system completely. Cisco Bug IDs: CSCvg22923, CSCvg55112, CSCvg55128, CSCvg55145, CSCvg58619, CSCvg64453, CSCvg64456, CSCvg64464, CSCvg64475, CSCvg68797.

The Flex-VPN load-balancing feature in the ipsec-ikev2 implementation in Cisco IOS before 15.1(1)SY3 does not require authentication, which allows remote attackers to trigger the forwarding of VPN traffic to an attacker-controlled destination, or the discarding of this traffic, by arranging for an arbitrary device to become a cluster member, aka Bug ID CSCub93641.

A vulnerability in the implementation of the Locator/ID Separation Protocol (LISP) in Cisco IOS XE 3.2 through 16.5 could allow an unauthenticated, remote attacker using an x tunnel router to bypass authentication checks performed when registering an Endpoint Identifier (EID) to a Routing Locator (RLOC) in the map server/map resolver (MS/MR). The vulnerability is due to a logic error introduced via a code regression for the affected software. An attacker could exploit this vulnerability by sending specific valid map-registration requests, which will be accepted by the MS/MR even if the authentication keys do not match, to the affected software. A successful exploit could allow the attacker to inject invalid mappings of EIDs to RLOCs in the MS/MR of the affected software. This vulnerability affects Cisco devices that are configured with LISP acting as an IPv4 or IPv6 map server. This vulnerability affects Cisco IOS XE Software release trains 3.9E and Everest 16.4. Cisco Bug IDs: CSCvc18008.

A vulnerability in the REST API of the web-based user interface (web UI) of Cisco IOS XE 3.1 through 16.5 could allow an unauthenticated, remote attacker to bypass authentication to the REST API of the web UI of the affected software. The vulnerability is due to insufficient input validation for the REST API of the affected software. An attacker could exploit this vulnerability by sending a malicious API request to an affected device. A successful exploit could allow the attacker to bypass authentication and gain access to the web UI of the affected software. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the HTTP Server feature is enabled for the device. The newly redesigned, web-based administration UI was introduced in the Denali 16.2 Release of Cisco IOS XE Software. This vulnerability does not affect the web-based administration UI in earlier releases of Cisco IOS XE Software. Cisco Bug IDs: CSCuz46036.

The Baseboard Management Controller (BMC) in Cisco Unified Computing System (UCS) does not properly handle SSH escape sequences, which allows remote authenticated users to bypass an unspecified authentication step via SSH port forwarding, aka Bug ID CSCtg17656.

A vulnerability in the implementation of Protected Extensible Authentication Protocol (PEAP) functionality for standalone configurations of Cisco Aironet 1800, 2800, and 3800 Series Access Points could allow an unauthenticated, adjacent attacker to bypass authentication and connect to an affected device. The vulnerability exists because the affected device uses an incorrect default configuration setting of fail open when running in standalone mode. An attacker could exploit this vulnerability by attempting to connect to an affected device. A successful exploit could allow the attacker to bypass authentication and connect to the affected device. This vulnerability affects Cisco Aironet 1800, 2800, and 3800 Series Access Points that are running a vulnerable software release and use WLAN configuration settings that include FlexConnect local switching and central authentication with MAC filtering. Cisco Bug IDs: CSCvd46314.

A vulnerability in the dynamic access control list (ACL) feature of Cisco IOS XE Software running on Cisco Catalyst 4000 Series Switches could allow an unauthenticated, adjacent attacker to cause dynamic ACL assignment to fail and the port to fail open. This could allow the attacker to pass traffic to the default VLAN of the affected port. The vulnerability is due to an uncaught error condition that may occur during the reassignment of the auth-default-ACL dynamic ACL to a switch port after 802.1x authentication fails. A successful exploit of this issue could allow a physically adjacent attacker to bypass 802.1x authentication and cause the affected port to fail open, allowing the attacker to pass traffic to the default VLAN of the affected switch port. Cisco Bug IDs: CSCvc72751.

A vulnerability in the web functionality of the Cisco Prime LAN Management Solution could allow an authenticated, remote attacker to hijack another user's administrative session, aka a Session Fixation Vulnerability. The vulnerability is due to the reuse of a preauthentication session token as part of the postauthentication session. An attacker could exploit this vulnerability by obtaining the presession token ID. An exploit could allow an attacker to hijack an existing user's session. Known Affected Releases 4.2(5). Cisco Bug IDs: CSCvf58392.

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. This vulnerability affects Cisco Prime Home versions from 6.3.0.0 to the first fixed release 6.5.0.1. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCvb49837.

A vulnerability in Cisco WebEx Meetings Server could allow an authenticated, remote attacker to conduct arbitrary password changes against any non-administrative user. More Information: CSCuz03345. Known Affected Releases: 2.6. Known Fixed Releases: 2.7.1.12.

An Authentication Bypass vulnerability in Cisco WebEx Meetings Server could allow an unauthenticated, remote attacker to access limited meeting information on the Cisco WebEx Meetings Server. More Information: CSCvd50728. Known Affected Releases: 2.6 2.7 2.8 CWMS-2.5MR1 Orion1.1.2.patch T29_orion_merge.

Cisco AnyConnect Secure Mobility Client 3.0 through 3.0.08066 does not ensure that authentication makes use of a legitimate certificate, which allows user-assisted man-in-the-middle attackers to spoof servers via a crafted certificate, aka Bug ID CSCtz29197.

Cisco Small Business IP phones with SPA 500 series firmware 7.4.9 and earlier do not require authentication for Push XML requests, which allows remote attackers to make telephone calls via an XML document, aka Bug ID CSCts08768.

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.2 through 8.4 do not properly perform proxy authentication during attempts to cut through a firewall, which allows remote attackers to obtain sensitive information via a connection attempt, aka Bug ID CSCtx42746.

Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services module in Cisco Catalyst 6500 series devices, with software 7.0 before 7.0(8.13), 7.1 and 7.2 before 7.2(5.3), 8.0 before 8.0(5.24), 8.1 before 8.1(2.50), 8.2 before 8.2(5), 8.3 before 8.3(2.18), 8.4 before 8.4(1.10), and 8.5 before 8.5(1.1) and Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(21), 3.2 before 3.2(22), 4.0 before 4.0(16), and 4.1 before 4.1(7) allow remote attackers to bypass authentication via a crafted TACACS+ reply, aka Bug IDs CSCto40365 and CSCto74274.

The sensor in Cisco Intrusion Prevention System (IPS) 7.0 and 7.1 allows remote attackers to cause a denial of service (file-handle exhaustion and mainApp hang) by making authentication attempts that exceed the configured limit, aka Bug ID CSCto51204.

Unspecified vulnerability in the SSH server in (1) Cisco Service Control Engine (SCE) 3.0.x before 3.0.7 and 3.1.x before 3.1.0, and (2) Icon Labs Iconfidant SSH before 2.3.8, allows remote attackers to cause a denial of service (management interface outage) via SSH traffic that occurs during management operations and triggers "illegal I/O operations," aka Bug ID CSCsh49563.

An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.

The telnet service in Cisco Video Surveillance IP Gateway Encoder/Decoder (Standalone and Module) firmware 1.8.1 and earlier, Video Surveillance SP/ISP Decoder Software firmware 1.11.0 and earlier, and the Video Surveillance SP/ISP firmware 1.23.7 and earlier does not require authentication, which allows remote attackers to perform administrative actions, aka CSCsj31729.

Cisco IOS 12.2E, 12.2F, and 12.2S places a "no login" line into the VTY configuration when an administrator makes certain changes to a (1) VTY/AUX or (2) CONSOLE setting on a device without AAA enabled, which allows remote attackers to bypass authentication and obtain a terminal session, a different vulnerability than CVE-1999-0293 and CVE-2005-2105.

Cisco Trust Agent (CTA) before 2.1.104.0, when running on MacOS X, allows attackers with physical access to bypass authentication and modify System Preferences, including passwords, by invoking the Apple Menu when the Access Control Server (ACS) produces a user notification message after posture validation.