Advisories: Cisco

This page shows the security advisories feed for Cisco products:

  • Cisco IP Phone 7800 Series and 8800 Series Denial of Service Vulnerability
    A vulnerability in the Session Initiation Protocol (SIP) call-handling functionality of Cisco IP Phone 7800 Series and IP Phone 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to incomplete input validation of SIP Session Description Protocol (SDP) parameters by the SDP parser of an affected phone. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected phone. A successful exploit could allow the attacker to cause all active phone calls on the affected phone to be dropped while the SIP process on the phone unexpectedly restarts, resulting in a DoS condition. 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-20180516-ip-phone-dos Security Impact Rating: Medium CVE: CVE-2018-0325
  • CPU Side-Channel Information Disclosure Vulnerabilities
    On January 3, 2018, researchers disclosed three vulnerabilities that take advantage of the implementation of speculative execution of instructions on many modern microprocessor architectures to perform side-channel information disclosure attacks. These vulnerabilities could allow an unprivileged local attacker, in specific circumstances, to read privileged memory belonging to other processes or memory allocated to the operating system kernel. The first two vulnerabilities, CVE-2017-5753 and CVE-2017-5715, are collectively known as Spectre. The third vulnerability, CVE-2017-5754, is known as Meltdown. The vulnerabilities are all variants of the same attack and differ in the way that speculative execution is exploited. To exploit any of these vulnerabilities, an attacker must be able to run crafted code on an affected device. Although the underlying CPU and operating system combination in a product or service may be affected by these vulnerabilities, the majority of Cisco products are closed systems that do not allow customers to run custom code and are, therefore, not vulnerable. There is no vector to exploit them. Cisco products are considered potentially vulnerable only if they allow customers to execute custom code side-by-side with Cisco code on the same microprocessor. A Cisco product that may be deployed as a virtual machine or a container, even while not directly affected by any of these vulnerabilities, could be targeted by such attacks if the hosting environment is vulnerable. Cisco recommends that customers harden their virtual environments, tightly control user access, and ensure that all security updates are installed. Customers who are deploying products as a virtual device in multi-tenant hosting environments should ensure that the underlying hardware, as well as operating system or hypervisor, is patched against the vulnerabilities in question. Although Cisco cloud services are not directly affected by these vulnerabilities, the infrastructure on which they run may be impacted. Refer to the “Affected Products” section of this advisory for information about the impact of these vulnerabilities on Cisco cloud services. Cisco will release software updates that address these vulnerabilities.   This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180104-cpusidechannel Security Impact Rating: Medium CVE: CVE-2017-5715,CVE-2017-5753,CVE-2017-5754
  • CPU Side-Channel Information Disclosure Vulnerabilities: May 2018
    On May 21, 2018, researchers disclosed two vulnerabilities that take advantage of the implementation of speculative execution of instructions on many modern microprocessor architectures to perform side-channel information disclosure attacks. These vulnerabilities could allow an unprivileged, local attacker, in specific circumstances, to read privileged memory belonging to other processes. The first vulnerability, CVE-2018-3639, is known as Spectre Variant 4 or SpectreNG. The second vulnerability, CVE-2018-3640, is known as Spectre Variant 3a. Both of these attacks are variants of the attacks disclosed in January 2018 and leverage cache-timing attacks to infer any disclosed data. To exploit either of these vulnerabilities, an attacker must be able to run crafted or script code on an affected device. Although the underlying CPU and operating system combination in a product or service may be affected by these vulnerabilities, the majority of Cisco products are closed systems that do not allow customers to run custom code and are, therefore, not vulnerable. There is no vector to exploit them. Cisco products are considered potentially vulnerable only if they allow customers to execute custom code side-by-side with Cisco code on the same microprocessor. A Cisco product that may be deployed as a virtual machine or a container, even while not directly affected by any of these vulnerabilities, could be targeted by such attacks if the hosting environment is vulnerable. Cisco recommends that customers harden their virtual environments, tightly control user access, and ensure that all security updates are installed. Customers who are deploying products as a virtual device in multi-tenant hosting environments should ensure that the underlying hardware, as well as operating system or hypervisor, is patched against the vulnerabilities in question. Although Cisco cloud services are not directly affected by these vulnerabilities, the infrastructure on which they run may be impacted. Refer to the “Affected Products” section of this advisory for information about the impact of these vulnerabilities on Cisco cloud services.  Cisco will release software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel Security Impact Rating: Medium CVE: CVE-2018-3639,CVE-2018-3640
  • Cisco Meeting Server Information Disclosure Vulnerability
    A vulnerability in Cisco Meeting Server (CMS) could allow an unauthenticated, adjacent attacker to access services running on internal device interfaces of an affected system. The vulnerability is due to incorrect default configuration of the device, which can expose internal interfaces and ports on the external interface of the system. A successful exploit could allow the attacker to gain unauthenticated access to configuration and database files and sensitive meeting information on an affected system. 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-20180606-cms-id Security Impact Rating: High CVE: CVE-2018-0263
  • Cisco WebEx Cross-Site Scripting Vulnerability
    A vulnerability in the web framework of the https://try.webex.com page of Cisco WebEx could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the user of the web interface of an affected system. The vulnerability is due to insufficient input validation of certain parameters that are passed to the affected software via the HTTP GET and HTTP POST methods. An attacker who can convince a user to follow an attacker-supplied link could execute arbitrary script or HTML code in the user’s browser in the context of an affected site. 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-20180606-webex-xss1 Security Impact Rating: Medium CVE: CVE-2018-0357
  • Cisco Web Security Appliance Layer 4 Traffic Monitor Security Bypass Vulnerability
    A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to circumvent Layer 4 Traffic Monitor (L4TM) functionality and bypass security protections. The vulnerability is due to a change in the underlying operating system software that is responsible for monitoring affected traffic. An attacker could exploit this vulnerability by sending crafted IP packets to an affected device. A successful exploit could allow the attacker to pass traffic through the device, which the WSA was configured to deny. This vulnerability affects both IPv4 and IPv6 traffic. 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-20180606-wsa Security Impact Rating: High CVE: CVE-2018-0353
  • Cisco IOS XE Software Authentication, Authorization, and Accounting Login Authentication Remote Code Execution Vulnerability
    A vulnerability in the authentication, authorization, and accounting (AAA) security services of Cisco IOS XE Software could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device or cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect memory operations that the affected software performs when the software parses a username during login authentication. An attacker could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the affected device or cause the affected device to reload, 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-20180606-aaa Security Impact Rating: Critical CVE: CVE-2018-0315
  • Cisco Identity Services Engine EAP TLS Certificate Denial of Service Vulnerability
    A vulnerability in the Extensible Authentication Protocol-Transport Layer Security (EAP-TLS) certificate validation during EAP authentication for the Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause the ISE application server to restart unexpectedly, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to incomplete input validation of the client EAP-TLS certificate. An attacker could exploit this vulnerability by initiating EAP authentication over TLS to the ISE with a crafted EAP-TLS certificate. A successful exploit could allow the attacker to restart the ISE application server, resulting in a DoS condition on the affected system. The ISE application could continue to restart while the client attempts to establish the EAP authentication connection. If an attacker attempted to import the same EAP-TLS certificate to the ISE trust store, it could trigger a DoS condition on the affected system. This exploit vector would require the attacker to have valid administrator credentials. 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-20180516-iseeap Security Impact Rating: High CVE: CVE-2018-0277
  • Cisco Unified IP Phone Software Denial of Service Vulnerability
    A vulnerability in the Session Initiation Protocol (SIP) ingress packet processing of Cisco Unified IP Phone software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a lack of flow-control mechanisms in the software. An attacker could exploit this vulnerability by sending high volumes of SIP INVITE traffic to the targeted device. Successful exploitation could allow the attacker to cause a disruption of services on the targeted IP phone. 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-20180606-ip-phone-dos Security Impact Rating: Medium CVE: CVE-2018-0332
  • Cisco AnyConnect Secure Mobility Client Certificate Bypass Vulnerability
    A vulnerability in the certificate management subsystem of Cisco AnyConnect Network Access Manager and of Cisco AnyConnect Secure Mobility Client for iOS, Mac OS X, Android, Windows, and Linux could allow an unauthenticated, remote attacker to bypass the TLS certificate check when downloading certain configuration files. The vulnerability is due to improper use of Simple Certificate Enrollment Protocol and improper server certificate validation. An attacker could exploit this vulnerability by preparing malicious profile and localization files for Cisco AnyConnect to use. A successful exploit could allow the attacker to remotely change the configuration profile, a certificate, or the localization data used by AnyConnect Secure Mobility Client. 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-20180606-AnyConnect-cert-bypass Security Impact Rating: Medium CVE: CVE-2018-0334
  • Cisco WebEx Cross-Site Scripting Vulnerability
    A vulnerability in the web framework of Cisco WebEx could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the user of the web interface of an affected system. The vulnerability is due to insufficient input validation of certain parameters that are passed to the affected software via the HTTP GET and HTTP POST methods. An attacker who can convince a user to follow an attacker-supplied link could execute arbitrary script or HTML code in the user’s browser in the context of an affected site. 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-20180606-webex-xss Security Impact Rating: Medium CVE: CVE-2018-0356
  • Cisco Wide Area Application Services Software Static SNMP Credentials Vulnerability
    A vulnerability in the default configuration of the Simple Network Management Protocol (SNMP) feature of Cisco Wide Area Application Services (WAAS) Software could allow an unauthenticated, remote attacker to read data from an affected device via SNMP. The vulnerability is due to a hard-coded, read-only community string in the configuration file for the SNMP daemon. An attacker could exploit this vulnerability by using the static community string in SNMP version 2c queries to an affected device. A successful exploit could allow the attacker to read any data that is accessible via SNMP on the affected device. Note: The static credentials are defined in an internal configuration file and are not visible in the current operation configuration ('running-config') or the startup configuration ('startup-config'). 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-20180606-waas-snmp Security Impact Rating: Medium CVE: CVE-2018-0329
  • Cisco Wide Area Application Services Software Disk Check Tool Privilege Escalation Vulnerability
    A vulnerability in the Disk Check Tool (disk-check.sh) for Cisco Wide Area Application Services (WAAS) Software could allow an authenticated, local attacker to elevate their privilege level to root. The attacker must have valid user credentials with super user privileges (level 15) to log in to the device. The vulnerability is due to insufficient validation of script files executed in the context of the Disk Check Tool. An attacker could exploit this vulnerability by replacing one script file with a malicious script file while the affected tool is running. A successful exploit could allow the attacker to gain root-level privileges and take full control of the device. 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-20180606-waas-priv-escalation Security Impact Rating: Medium CVE: CVE-2018-0352
  • Cisco Integrated Management Controller Supervisor and Cisco UCS Director DOM Stored Cross-Site Scripting Vulnerability
    A vulnerability in the web-based management interface of Cisco Integrated Management Controller Supervisor Software and Cisco UCS Director Software could allow an authenticated, remote attacker to conduct a Document Object Model-based (DOM-based), stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the affected interface to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or allow the attacker to access sensitive browser-based information on the affected device. 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-20180606-ucsdimcs Security Impact Rating: Medium CVE: CVE-2018-0149
  • Cisco Unified Computing System Role-Based Access Vulnerability
    A vulnerability in the role-based access-checking mechanisms of Cisco Unified Computing System (UCS) Software could allow an authenticated, local attacker to execute arbitrary commands on an affected system. The vulnerability exists because the affected software lacks proper input and validation checks for certain file systems. An attacker could exploit this vulnerability by issuing crafted commands in the CLI of an affected system. A successful exploit could allow the attacker to cause other users to execute unwanted arbitrary commands on the affected system. 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-20180606-ucs-access Security Impact Rating: Medium CVE: CVE-2018-0338
  • Cisco Unified Communications Manager Cross-Site Scripting Vulnerability
    A vulnerability in the web framework of the Cisco Unified Communications Manager (Unified CM) software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the user of the web interface of the affected system. The vulnerability is due to insufficient input validation of certain parameters passed to the web server. An attacker could exploit this vulnerability by convincing the user to access a malicious link or by intercepting the user request and injecting certain malicious code. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site or allow the attacker to access sensitive browser-based information. 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-20180606-ucm-xss Security Impact Rating: Medium CVE: CVE-2018-0340
  • Cisco Prime Collaboration Provisioning SQL Injection Vulnerability
    A vulnerability in the web framework code of Cisco Prime Collaboration Provisioning (PCP) could allow an unauthenticated, remote attacker to execute arbitrary SQL queries. The vulnerability is due to a lack of proper validation on user-supplied input in SQL queries. An attacker could exploit this vulnerability by sending crafted URLs that contain malicious SQL statements to the affected application. 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-20180606-prime-sql Security Impact Rating: High CVE: CVE-2018-0320
  • Cisco Prime Collaboration Provisioning Unauthenticated Remote Method Invocation Vulnerability
    A vulnerability in Cisco Prime Collaboration Provisioning (PCP) could allow an unauthenticated, remote attacker to access the Java Remote Method Invocation (RMI) system. The vulnerability is due to an open port in the Network Interface and Configuration Engine (NICE) service. An attacker could exploit this vulnerability by accessing the open RMI system on an affected PCP instance. An exploit could allow the attacker to perform malicious actions that affect PCP and the devices that are connected to it. 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-20180606-prime-rmi Security Impact Rating: Critical CVE: CVE-2018-0321
  • Cisco Prime Collaboration Provisioning Unauthorized Password Reset Vulnerability
    A vulnerability in the password reset function of Cisco Prime Collaboration Provisioning (PCP) could allow an unauthenticated, remote attacker to gain unauthorized access to an affected device. The vulnerability is due to insufficient validation of a password reset request. An attacker could exploit this vulnerability by submitting a password reset request and changing the password for any user on an affected system. An exploit could allow the attacker to gain administrative-level privileges on the affected system. 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-20180606-prime-password-reset Security Impact Rating: High CVE: CVE-2018-0318
  • Cisco Prime Collaboration Provisioning Unauthorized Password Recovery Vulnerability
    A vulnerability in the password recovery function of Cisco Prime Collaboration Provisioning (PCP) could allow an unauthenticated, remote attacker to gain unauthorized access to an affected device. The vulnerability is due to insufficient validation of a password recovery request. An attacker could exploit this vulnerability by submitting a password recovery request and changing the password for any user on an affected system. An exploit could allow the attacker to gain administrative-level privileges on the affected system. 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-20180606-prime-password-recovery Security Impact Rating: High CVE: CVE-2018-0319
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