Cisco Aironet 1560, 1800, 2800, and 3800 Series Access Points Denial of Service Vulnerability

A vulnerability in the Cisco Aironet 1560, 1800, 2800, and 3800 Series Access Points APs software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service DoS condition. The vulnerability is due to a deadlock condition th...

Apache Struts2 Jakarta Multipart Parser File Upload Code Execution Vulnerability Affecting Cisco Products

On March 6, 2017, Apache disclosed a vulnerability in the Jakarta Multipart parser used in Apache Struts2 that could allow an attacker to execute commands remotely on a targeted system by using a crafted Content-Type, Content-Disposition, or Content-Length value. This vulnerability has been...

Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability

A vulnerability in the web-based management interface of Cisco Hosted Collaboration Mediation Fulfillment could allow an unauthenticated, remote attacker to conduct a cross-site request forgery CSRF attack and perform arbitrary actions on an affected system. The vulnerability is due to insufficie...

Cisco Secure Boot Hardware Tampering Vulnerability

A vulnerability in the logic that handles access control to one of the hardware components in Cisco's proprietary Secure Boot implementation could allow an authenticated, local attacker to write a modified firmware image to the component. This vulnerability affects multiple Cisco products that...

Cisco HyperFlex Software Static Signing Key Vulnerability

A vulnerability in Cisco HyperFlex Software could allow an unauthenticated, remote attacker to generate valid, signed session tokens. The vulnerability is due to a static signing key that is present in all Cisco HyperFlex systems. An attacker could exploit this vulnerability by accessing the stat...

Cisco Expressway Series and Cisco TelePresence Video Communication Server Remote Code Execution Vulnerability

A vulnerability in the administrative web interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server VCS could allow an authenticated, remote attacker to execute code with user-level privileges on the underlying operating system. The vulnerability is due to insufficien...

Cisco Adaptive Security Appliance IPsec VPN Denial of Service Vulnerability

A vulnerability in the implementation of Traffic Flow Confidentiality TFC over IPsec functionality in Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause an affected device to restart unexpectedly,...

Cisco Digital Network Architecture Center Authentication Bypass Vulnerability

A vulnerability in the identity management service of Cisco Digital Network Architecture DNA Center could allow an unauthenticated, remote attacker to bypass authentication and take complete control of identity management functions. The vulnerability is due to insufficient security restrictions f...

Cisco Small Business RV320 and RV325 Routers Command Injection Vulnerability

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands. The vulnerability is due to improper...

Cisco Prime Infrastructure Information Disclosure Vulnerability

A vulnerability in the server backup function of Cisco Prime Infrastructure could allow an authenticated, remote attacker to view sensitive information. The vulnerability is due to the transmission of sensitive information as part of a GET request. An attacker could exploit this vulnerability by...

Cisco Webex Centers Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Webex Events Center, Cisco Webex Meeting Center, Cisco Webex Support Center, and Cisco Webex Training Center could allow an unauthenticated, remote attacker to conduct a cross-site scripting XSS attack against a user of the web-based...

Multiple Vulnerabilities in ntpd Affecting Cisco Products - October 2015

Multiple Cisco products incorporate a version of the ntpd package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service DoS condition or modify the time being advertised by a device acting as a...

Cisco IOS and Cisco IOS XE Type 4 Passwords Issue

This is the Cisco response to research performed by Mr. Philipp Schmidt and Mr. Jens Steube from the Hashcat Project "http://hashcat.net/oclhashcat-plus/" on the weakness of Type 4 passwords on Cisco IOS and Cisco IOS XE devices. Mr. Schmidt and Mr. Steube reported this issue to the Cisco PSIRT o...

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services VPN Denial of Service Vulnerabilities

Multiple vulnerabilities in Cisco Adaptive Security Appliance ASA Software and Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. These vulnerabilities are due to lack of proper input validation o...

Linux and FreeBSD Kernels TCP Reassembly Denial of Service Vulnerabilities Affecting Cisco Products: August 2018

On August 6, 2018, the Vulnerability Coordination team of the National Cyber Security Centre of Finland NCSC-FI and the CERT Coordination Center CERT/CC disclosed vulnerabilities in the TCP stacks that are used by the Linux and FreeBSD kernels. These vulnerabilities are publicly known as...

Cisco Adaptive Security Appliance Remote Code Execution and Denial of Service Vulnerability

Update from February 5, 2018: After further investigation, Cisco has identified additional attack vectors and features that are affected by this vulnerability. In addition, it was also found that the original fix was incomplete so new fixed code versions are now available. Please see the Fixed...

Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016

Multiple Cisco products incorporate a version of the Network Time Protocol daemon ntpd package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service DoS condition or modify the time being advertised ...

Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability

A vulnerability in the quality of service QoS subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition or execute arbitrary code with elevated privileges. The vulnerability is due to incorrect bounds...

Linux Kernel IP Fragment Reassembly Denial of Service Vulnerability Affecting Cisco Products: August 2018

On August 14, 2018, the Vulnerability Coordination team of the National Cyber Security Centre of Finland NCSC-FI and the CERT Coordination Center CERT/CC disclosed a vulnerability in the IP stack that is used by the Linux Kernel. This vulnerability is publicly known as FragmentSmack. The...

Cisco HyperFlex HX Command Injection Vulnerabilities

Multiple vulnerabilities in the web-based management interface of Cisco HyperFlex HX could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device. For more information about these vulnerabilities, see the Details "details" section of this advisor...

Cisco RV110W, RV130W, and RV215W Routers Management Interface Remote Command Execution Vulnerability

A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The...

Bleichenbacher Attack on TLS Affecting Cisco Products: December 2017

On December 12, 2017, a research paper with the title Return of Bleichenbacher's Oracle Threat was made publicly available. This paper describes how some Transport Layer Security TLS stacks are vulnerable to variations of the classic Bleichenbacher attack on RSA key exchange. Multiple...

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: September 2016

On September 22, 2016, the OpenSSL Software Foundation released an advisory that describes 14 vulnerabilities. Of these 14 vulnerabilities, the OpenSSL Software Foundation classifies one as “Critical Severity,” one as “Moderate Severity,” and the other 12 as “Low Severity.” Subsequently, on...

SNMP Remote Code Execution Vulnerabilities in Cisco IOS and IOS XE Software

The Simple Network Management Protocol SNMP subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these...

Cisco IOS and IOS XE Software HTTP Client Information Disclosure Vulnerability

A vulnerability in the HTTP client feature of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to read and modify data that should normally have been sent via an encrypted channel. The vulnerability is due to TCP port information not being considered when matching new...

Cisco Small Business Series Switches Open Redirect Vulnerability

A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attack...

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: January and February 2017

On January 26, 2017, the OpenSSL Software Foundation released a security advisory that included three new vulnerabilities. The foundation also released one vulnerability that was already disclosed in the OpenSSL advisory for November 2016 and included in the Cisco Security Advisory Multiple...

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF LSA Processing Denial of Service Vulnerability

A vulnerability in the Open Shortest Path First OSPF implementation of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service DoS...

Cisco Webex Teams URI Handler Insecure Library Loading Vulnerability

A vulnerability in the Cisco Webex Teams client, formerly Cisco Spark, could allow an attacker to execute arbitrary commands on a targeted system. This vulnerability is due to unsafe search paths used by the application URI that is defined in Windows operating systems. An attacker could exploit...

Cisco Adaptive Security Appliance Software Secure Copy Denial of Service Vulnerability

A vulnerability in the Secure Copy SCP feature of Cisco Adaptive Security Appliance ASA Software could allow an authenticated, remote attacker to cause a denial of service DoS condition. The vulnerability is due to the use of an incorrect data type for a length variable. An attacker could exploit...

Cisco IOS and IOS XE Software Split DNS Denial of Service Vulnerability

A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service DoS condition. The vulnerability occurs because the regular expression regex engine that...

Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability

A vulnerability in the TrustSec CLI parser of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to an improper interaction between the web UI and the CLI parser. An attacker could exploit this...

Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerability

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 retrieve sensitive information. The vulnerability is due to improper access controls for URLs. An attacker could exploit th...

SSL-TLS Implementations Cipher Block Chaining Padding Information Disclosure Vulnerability

A vulnerability in certain implementations of the TLSv1 protocol could allow an unauthenticated, remote attacker to access sensitive information. The vulnerability is due to improper block cipher padding implemented in TLSv1 when using Cipher Block Chaining CBC mode. An attacker could exploit the...

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021

On March 25, 2021, the OpenSSL Project released a security advisory, OpenSSL Security Advisory 25 March 2021, "https://www.openssl.org/news/secadv/20210325.txt" that disclosed two vulnerabilities. Exploitation of these vulnerabilities could allow an attacker to use a valid non-certificate authori...

Cisco IOS XE Software for Catalyst 9200 Series Switches Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

Cisco Prime License Manager SQL Injection Vulnerability

Update 2018-December-20: The updated patch ciscocm.CSCvk30822v2.0.k3.cop.sgn that avoids the functional issues identified with the v1.0 patch has been posted to Cisco.com. See the Fixed Releases "fr" section for details. Update 2018-December-10: Installing the ciscocm.CSCvk30822v1.0.k3.cop.sgn...

OpenSSL TLS/DTLS Heartbeat Information Disclosure Vulnerability

A vulnerability in the Transport Layer Security TLS/Datagram Transport Layer Security DTLS heartbeat functionality in OpenSSL used in multiple Cisco products could allow an unauthenticated, remote attacker to retrieve memory in chunks of 64 kilobytes from a connected client or server. The...

Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows Privilege Escalation Vulnerability

A vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows could allow a low-privileged, authenticated, local attacker to elevate privileges to those of SYSTEM. The client update process is executed aft...

Cisco Unified Communications Manager XML External Expansion Vulnerability

A vulnerability in the web-based interface of Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition SME could allow an unauthenticated, remote attacker to access sensitive information or cause a denial of service DoS condition. The vulnerability ...

Cisco Webex Meetings Open Redirect Vulnerability

A vulnerability in the web-based management interface of Cisco Webex Meetings could allow an unauthenticated, remote attacker to redirect a user to an untrusted web page, bypassing the warning mechanism that should prompt the user before the redirection. This vulnerability is due to improper inpu...

Cisco IOS Interface Blocked by IPv4 Packets

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Cisco Prime Collaboration Provisioning Tool Web Portal Repeated Bad Login Attempts Denial of Service Vulnerability

A vulnerability in the web portal of the Cisco Prime Collaboration Provisioning Tool could allow an unauthenticated, remote attacker to create a denial of service DoS condition for individual users. The vulnerability is due to weak login controls. An attacker could exploit this vulnerability by...

Multiple Vulnerabilities in Apache Struts 2 Affecting Cisco Products: September 2017

On September 5, 2017, the Apache Software Foundation released security bulletins that disclosed three vulnerabilities in the Apache Struts 2 package. Of these vulnerabilities, the Apache Software Foundation classifies one as Critical Severity, one as Medium Severity, and one as Low Severity. For...

Cisco AnyConnect Secure Mobility Client Arbitrary Code Execution Vulnerability

A vulnerability in the interprocess communication IPC channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to cause a targeted AnyConnect user to execute a malicious script. The vulnerability is due to a lack of authentication to the IPC listene...

OpenSSL RSA Temporary Key Cryptographic Downgrade Vulnerability

A vulnerability in OpenSSL could allow an unauthenticated, remote attacker to bypass security restrictions. The vulnerability is due to improper handling of an RSA temporary key. An attacker with a privileged network position could exploit the vulnerability by returning a weak temporary RSA key t...

Cisco IOS and IOS XE Software Cluster Management Protocol Remote Code Execution Vulnerability

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...

Cisco Finesse Open Redirect Vulnerability

A vulnerability in the web-based management interface of Cisco Finesse could allow an unauthenticated, remote attacker to redirect a user to an undesired web page. This vulnerability is due to improper input validation of the URL parameters in an HTTP request that is sent to an affected system. A...

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IKEv1 Denial of Service Vulnerability

A vulnerability in the Internet Key Exchange version 1 IKEv1 feature of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service DoS...

Cisco Unified Communications Manager IM&P Service, Cisco TelePresence VCS, and Cisco Expressway Series Denial of Service Vulnerability

A vulnerability in the authentication service of the Cisco Unified Communications Manager IM and Presence Unified CM IM&P Service, Cisco TelePresence Video Communication Server VCS, and Cisco Expressway Series could allow an unauthenticated, remote attacker to cause a service outage for users...