The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to discover a WAN IPv6 IP address by leveraging knowledge of the CM MAC address.

node-jose is a JavaScript implementation of the JSON Object Signing and Encryption (JOSE) for current web browsers and node.js-based servers. node-jose earlier than version 0.9.3 is vulnerable to an invalid curve attack. This allows an attacker to recover the private secret key when JWE with Key Agreement with Elliptic Curve Diffie-Hellman Ephemeral Static (ECDH-ES) is used.

The fabric-interconnect component in Cisco Unified Computing System (UCS) does not encrypt KVM media traffic, which allows remote attackers to obtain sensitive information, and consequently complete the authentication process for a server connection, by sniffing the network, aka Bug ID CSCtr72970.

Cisco IOS 15.1 and 15.2, when the Multicast Music-on-Hold (MMoH) feature of Cisco Unified Communications Manager (CUCM) is enabled, allows remote attackers to obtain sensitive crosstalk information by listening during a PSTN call, aka Bug ID CSCtx77750.

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series (ASA 5505, 5510, 5520, 5540, and 5550) devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat (ROBOT) attack. An attacker could iteratively query a server running a vulnerable TLS stack implementation to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions. Cisco Bug IDs: CSCvg97652.

A vulnerability in the HTTP API of Cisco Enterprise Chat and Email could allow an unauthenticated, remote attacker to download files attached through chat sessions. The vulnerability is due to insufficient authentication mechanisms on the file download function of the API. An attacker could exploit this vulnerability by sending a crafted request to the API. A successful exploit could allow the attacker to download files that other users attach through the chat feature. This vulnerability affects versions prior to 12.0(1)ES1.

A vulnerability in the web-based user interface of the Cisco Secure Access Control Server prior to 5.8 patch 9 could allow an unauthenticated, remote attacker to gain read access to certain information in the affected system. The vulnerability is due to improper handling of XML External Entities (XXEs) when parsing an XML file. An attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file. Cisco Bug IDs: CSCve70595.

A vulnerability in the web-based user interface of the Cisco Secure Access Control Server prior to 5.8 patch 9 could allow an unauthenticated, remote attacker to gain read access to certain information in the affected system. The vulnerability is due to improper handling of XML External Entities (XXEs) when parsing an XML file. An attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file. Cisco Bug IDs: CSCve70616.

A vulnerability in the web framework of the Cisco Digital Network Architecture Center (DNA Center) could allow an unauthenticated, remote attacker to communicate with the Kong API server without restriction. The vulnerability is due to an overly permissive Cross Origin Resource Sharing (CORS) policy. An attacker could exploit this vulnerability by convincing a user to follow a malicious link. An exploit could allow the attacker to communicate with the API and exfiltrate sensitive information. Cisco Bug IDs: CSCvh99208.

A vulnerability in the management console of Cisco Firepower System Software could allow an unauthenticated, remote attacker to access sensitive data about the system. The vulnerability is due to improper cross-origin domain protections for the WebSocket protocol. An attacker could exploit this vulnerability by convincing a user to visit a malicious website designed to send requests to the affected application while the user is logged into the application with an active session cookie. A successful exploit could allow the attacker to retrieve policy or configuration information from the affected software and to perform another attack against the management console. Cisco Bug IDs: CSCvh68311.

Cisco Unified Communications Domain Manager before 10.6(1) provides different error messages for pathname access attempts depending on whether the pathname exists, which allows remote attackers to map a filesystem via a series of requests, aka Bug ID CSCut67891.

The random-number generator on Cisco Small Business RV routers 4.x and SA500 security appliances 2.2.07 does not have sufficient entropy, which makes it easier for remote attackers to determine a TLS key pair via unspecified computations upon handshake key-exchange data, aka Bug ID CSCus15224.

The Cisco Spark application 2015-07-04 for mobile operating systems does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate, aka Bug IDs CSCut36742 and CSCut36844.

The API in the Guest Server in Cisco Jabber, when HTML5 is used, allows remote attackers to obtain sensitive information by sniffing the network during an HTTP (1) GET or (2) POST response, aka Bug ID CSCus19801.

The API in the Guest Server in Cisco Jabber, when the HTML5 CORS feature is used, allows remote attackers to obtain sensitive information by sniffing the network during an HTTP (1) GET or (2) POST request, aka Bug ID CSCus19789.

The syslog-management subsystem in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to obtain an administrator password by waiting for an administrator to copy a file, and then (1) sniffing the network for a syslog message or (2) reading a syslog message in a file on a syslog server, aka Bug IDs CSCuq22357 and CSCur41860.

Cisco WebEx Training Center allows remote attackers to discover registration IDs via a crafted URL, aka Bug ID CSCul57121.

The XML parser in Cisco Security Monitoring, Analysis, and Response System (MARS) allows remote attackers to read arbitrary files via an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka Bug ID CSCue55093.

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.4 process IKE requests despite a vpnclient mode configuration, which allows remote attackers to obtain potentially sensitive information by reading IKE responder traffic, aka Bug ID CSCtt07749.

Cisco Jabber 10.6.x, 11.0.x, and 11.1.x on Windows allows man-in-the-middle attackers to conduct STARTTLS downgrade attacks and trigger cleartext XMPP sessions via unspecified vectors, aka Bug ID CSCuw87419.

The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH host keys across different customers' installations, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging knowledge of a private key from another installation, aka Bug IDs CSCus29681, CSCuu95676, and CSCuu96601.

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.

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

The Event Center module in Cisco WebEx Meetings Server does not perform request authentication in all intended circumstances, which allows remote attackers to discover host keys and event passwords via crafted URLs, aka Bug ID CSCue62485.

A vulnerability in the Identity Firewall feature of Cisco ASA Software before 9.6(2.1) 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.

The KVM subsystem in Cisco Unified Computing System (UCS) relies on a hardcoded X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers, and read keyboard and mouse events, by leveraging knowledge of this certificate's private key, aka Bug ID CSCte90327.

A vulnerability in the Cisco Network Plug and Play application of Cisco IOS 12.4 through 15.6 and Cisco IOS XE 3.3 through 16.4 could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data by using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software. Cisco Bug IDs: CSCvc33171.

The Object Groups for Access Control Lists (ACLs) feature in Cisco IOS 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to bypass intended access restrictions via crafted requests, aka Bug IDs CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122, and CSCsu50252.

The captive portal application in Cisco Identity Services Engine (ISE) allows remote attackers to discover cleartext usernames and passwords by leveraging unspecified use of hidden form fields in an HTML document, aka Bug ID CSCug02515.

A vulnerability in the web portal of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to perform a command injection attack and execute arbitrary commands with root privileges. The vulnerability is due to insufficient input validation by the web portal framework. An attacker could exploit this vulnerability by providing malicious input during web portal authentication. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the underlying operating system.

Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.0 before 7.0(8)1, 7.1 before 7.1(2)74, 7.2 before 7.2(4)9, and 8.0 before 8.0(4)5 do not properly implement the implicit deny statement, which might allow remote attackers to successfully send packets that bypass intended access restrictions, aka Bug ID CSCsq91277.

A vulnerability in the Web Services Management Agent (WSMA) feature of Cisco Industrial Network Director (IND) could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data using an invalid X.509 certificate. The vulnerability is due to insufficient X.509 certificate validation when establishing a WSMA connection. An attacker could exploit this vulnerability by supplying a crafted X.509 certificate during the WSMA connection setup phase. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on WSMA connections to the affected software. At the time of publication, this vulnerability affected Cisco IND Software releases prior to 1.7.

A vulnerability in Cisco Webex Meetings Mobile (iOS) could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data by using an invalid Secure Sockets Layer (SSL) certificate. The vulnerability is due to insufficient SSL certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted SSL certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to access administrative credentials. The vulnerability exists because affected devices use weak encryption algorithms for user credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack and decrypting intercepted credentials. A successful exploit could allow the attacker to gain access to an affected device with administrator privileges. This vulnerability affects Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers running firmware releases prior to 1.4.2.22.

A vulnerability in the Cisco Smart Call Home feature of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.

A vulnerability in the Transport Layer Security (TLS) certificate validation functionality of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, remote attacker to perform insecure TLS client authentication on an affected device. The vulnerability is due to insufficient TLS client certificate validations for certificates sent between the various components of an ACI fabric. An attacker who has possession of a certificate that is trusted by the Cisco Manufacturing CA and the corresponding private key could exploit this vulnerability by presenting a valid certificate while attempting to connect to the targeted device. An exploit could allow the attacker to gain full control of all other components within the ACI fabric of an affected device.

A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) could allow an unauthenticated remote attacker to execute arbitrary code with root privileges on the underlying operating system. The vulnerability is due to insufficient input validation during the initial High Availability (HA) configuration and registration process of an affected device. An attacker could exploit this vulnerability by uploading a malicious file during the HA registration period. A successful exploit could allow the attacker to execute arbitrary code with root-level privileges on the underlying operating system. Note: This vulnerability can only be exploited during the HA registration period. See the Details section for more information.

A vulnerability in TCP processing in Cisco FirePOWER system software could allow an unauthenticated, remote attacker to download files that would normally be blocked. Affected Products: The following Cisco products are vulnerable: Adaptive Security Appliance (ASA) 5500-X Series with FirePOWER Services, Advanced Malware Protection (AMP) for Networks - 7000 Series Appliances, Advanced Malware Protection (AMP) for Networks - 8000 Series Appliances, FirePOWER 7000 Series Appliances, FirePOWER 8000 Series Appliances, FirePOWER Threat Defense for Integrated Services Routers (ISRs), Next Generation Intrusion Prevention System (NGIPS) for Blue Coat X-Series, Sourcefire 3D System Appliances, Virtual Next-Generation Intrusion Prevention System (NGIPSv) for VMware. More Information: CSCvb20102. Known Affected Releases: 2.9.7.10.

PXE Encryption in Cisco IronPort Encryption Appliance 6.2.4 before 6.2.4.1.1, 6.2.5, 6.2.6, 6.2.7 before 6.2.7.7, 6.3 before 6.3.0.4, and 6.5 before 6.5.0.2; and Cisco IronPort PostX 6.2.1 before 6.2.1.1 and 6.2.2 before 6.2.2.3; allows remote attackers to obtain the decryption key via unspecified vectors, related to a "logic error."

A vulnerability in the TLS handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 1000 Series firewalls could allow an unauthenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper implementation of countermeasures against the Bleichenbacher attack for cipher suites that rely on RSA for key exchange. An attacker could exploit this vulnerability by sending crafted TLS messages to the device, which would act as an oracle and allow the attacker to carry out a chosen-ciphertext attack. A successful exploit could allow the attacker to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions to the affected device. To exploit this vulnerability, an attacker must be able to perform both of the following actions: Capture TLS traffic that is in transit between clients and the affected device Actively establish a considerable number of TLS connections to the affected device

A vulnerability in the content filtering functionality of Cisco AsyncOS Software for Cisco Email Security Appliances and Cisco Web Security Appliances could allow an unauthenticated, remote attacker to bypass user filters that are configured for an affected device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for both virtual and hardware versions of the following Cisco products: Cisco Email Security Appliances (ESAs) that are configured to use message or content filters that scan incoming email attachments; Cisco Web Security Appliances (WSAs) that are configured to use services that scan accessed web content. More Information: CSCva90076, CSCvb06764. Known Affected Releases: 10.0.0-125 8.5.7-042 9.7.2-047.

A vulnerability in the sftunnel functionality of Cisco Firepower Management Center (FMC) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to obtain the device registration hash. The vulnerability is due to insufficient sftunnel negotiation protection during initial device registration. An attacker in a man-in-the-middle position could exploit this vulnerability by intercepting a specific flow of the sftunnel communication between an FMC device and an FTD device. A successful exploit could allow the attacker to decrypt and modify the sftunnel communication between FMC and FTD devices, allowing the attacker to modify configuration data sent from an FMC device to an FTD device or alert data sent from an FTD device to an FMC device.

Multiple vulnerabilities in Cisco Firepower Management Center (FMC) Software and Cisco Firepower User Agent Software could allow an attacker to access a sensitive part of an affected system with a high-privileged account. For more information about these vulnerabilities, see the Details section of this advisory.

A vulnerability in the Graphite web interface of the Policy and Charging Rules Function (PCRF) of Cisco Policy Suite (CPS) could allow an unauthenticated, remote attacker to access the Graphite web interface. The attacker would need to have access to the internal VLAN where CPS is deployed. The vulnerability is due to lack of authentication. An attacker could exploit this vulnerability by directly connecting to the Graphite web interface. An exploit could allow the attacker to access various statistics and Key Performance Indicators (KPIs) regarding the Cisco Policy Suite environment.

A vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to execute unsigned code during the PXE boot process on an affected device. The PXE boot loader is part of the BIOS and runs over the management interface of hardware platforms that are running Cisco IOS XR Software only. The vulnerability exists because internal commands that are issued when the PXE network boot process is loading a software image are not properly verified. An attacker could exploit this vulnerability by compromising the PXE boot server and replacing a valid software image with a malicious one. Alternatively, the attacker could impersonate the PXE boot server and send a PXE boot reply with a malicious file. A successful exploit could allow the attacker to execute unsigned code on the affected device. Note: To fix this vulnerability, both the Cisco IOS XR Software and the BIOS must be upgraded. The BIOS code is included in Cisco IOS XR Software but might require additional installation steps. For further information, see the Fixed Software section of this advisory.

Media Origination System Suite Software 2.6 and earlier in Cisco Virtual Media Packager (VMP) allows remote attackers to bypass authentication and make arbitrary Platform and Applications Manager (PAM) API calls via unspecified vectors, aka Bug ID CSCuz52110.

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.

Cisco IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that should have been recognized by a filter, aka Bug ID CSCuy64806.

Cisco Prime Home 5.2.0 allows remote attackers to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka Bug ID CSCvb17814.

A vulnerability in the web-based management interface of Cisco Small Business RV110W and RV215W Series Routers could allow an unauthenticated, remote attacker to download sensitive information from the device, which could include the device configuration. The vulnerability is due to improper authorization of an HTTP request. An attacker could exploit this vulnerability by accessing a specific URI on the web-based management interface of the router, but only after any valid user has opened a specific file on the device since the last reboot. A successful exploit would allow the attacker to view sensitive information, which should be restricted.