CVE-2020-3440

Cisco Webex Meetings Desktop App for Windows Arbitrary File Overwrite Vulnerability

A vulnerability in Cisco Webex Meetings Desktop App for Windows could allow an unauthenticated, remote attacker to overwrite arbitrary files on an end-user system. The vulnerability is due to improper validation of URL parameters that are sent from a website to the affected application. An attacker could exploit this vulnerability by persuading a user to follow a URL to a website that is designed to submit crafted input to the affected application. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system, possibly corrupting or deleting critical system files.

CVSS 3.1 · 6.5 Medium EPSS 2.6% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2020-3419

Cisco Webex Meetings and Cisco Webex Meetings Server Ghost Join Vulnerability

A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to join a Webex session without appearing on the participant list. This vulnerability is due to improper handling of authentication tokens by a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. A successful exploit requires the attacker to have access to join a Webex meeting, including applicable meeting join links and passwords. The attacker could then exploit this vulnerability to join meetings, without appearing in the participant list, while having full access to audio, video, chat, and screen sharing capabilities.

CVSS 3.1 · 6.5 Medium EPSS 2.2% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Server

CVE-2020-3413

Cisco Webex Meetings Scheduled Meeting Template Deletion Vulnerability

A vulnerability in the scheduled meeting template feature of Cisco Webex Meetings could allow an authenticated, remote attacker to delete a scheduled meeting template that belongs to another user in their organization. The vulnerability is due to insufficient authorization enforcement for requests to delete scheduled meeting templates. An attacker could exploit this vulnerability by sending a crafted request to the Webex Meetings interface to delete a scheduled meeting template. A successful exploit could allow the attacker to delete a scheduled meeting template that belongs to a user other than themselves.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Online

CVE-2020-3412

Cisco Webex Meetings Scheduled Meeting Template Creation Vulnerability

A vulnerability in the scheduled meeting template feature of Cisco Webex Meetings could allow an authenticated, remote attacker to create a scheduled meeting template that would belong to another user in their organization. The vulnerability is due to insufficient authorization enforcement for the creation of scheduled meeting templates. An attacker could exploit this vulnerability by sending a crafted request to the Webex Meetings interface to create a scheduled meeting template. A successful exploit could allow the attacker to create a scheduled meeting template that would belong to a user other than themselves.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Online

CVE-2020-3361

Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability

A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to gain unauthorized access to a vulnerable Webex site. The vulnerability is due to improper handling of authentication tokens by a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. If successful, the attacker could gain the privileges of another user within the affected Webex site.

CVSS 3.1 · 8.1 High EPSS 2.4% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Webex Meetings Server

CVE-2020-3347

Cisco Webex Meetings Desktop App for Windows Shared Memory Information Disclosure Vulnerability

A vulnerability in Cisco Webex Meetings Desktop App for Windows could allow an authenticated, local attacker to gain access to sensitive information on an affected system. The vulnerability is due to unsafe usage of shared memory that is used by the affected software. An attacker with permissions to view system memory could exploit this vulnerability by running an application on the local system that is designed to read shared memory. A successful exploit could allow the attacker to retrieve sensitive information from the shared memory, including usernames, meeting information, or authentication tokens that could aid the attacker in future attacks.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2020-3345

Cisco Webex Meetings and Cisco Webex Meetings Server HTML Injection Vulnerability

A vulnerability in certain web pages of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to modify a web page in the context of a browser. The vulnerability is due to improper checks on parameter values within affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious web sites, or the attacker could leverage this vulnerability to conduct further client-side attacks.

CVSS 3.1 · 4.3 Medium EPSS 1.2% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Webex Meetings Server

CVE-2020-3342

Cisco Webex Meetings Desktop App for Mac Update Feature Code Execution Vulnerability

A vulnerability in the software update feature of Cisco Webex Meetings Desktop App for Mac could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. The vulnerability is due to improper validation of cryptographic protections on files that are downloaded by the application as part of a software update. An attacker could exploit this vulnerability by persuading a user to go to a website that returns files to the client that are similar to files that are returned from a valid Webex website. The client may fail to properly validate the cryptographic protections of the provided files before executing them as part of an update. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the user.

CVSS 3.1 · 8.8 High EPSS 3.9% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2020-3263

Cisco Webex Meetings Desktop App URL Filtering Arbitrary Program Execution Vulnerability

A vulnerability in Cisco Webex Meetings Desktop App could allow an unauthenticated, remote attacker to execute programs on an affected end-user system. The vulnerability is due to improper validation of input that is supplied to application URLs. The attacker could exploit this vulnerability by persuading a user to follow a malicious URL. A successful exploit could allow the attacker to cause the application to execute other programs that are already present on the end-user system. If malicious files are planted on the system or on an accessible network file path, the attacker could execute arbitrary code on the affected system.

CVSS 3.1 · 7.5 High EPSS 4.2% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2020-3194

Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerability

A vulnerability in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerability exists due to insufficient validation of certain elements with a Webex recording stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

CVSS 3.1 · 7.8 High EPSS 2.0% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Webex Meetings Online Webex Meetings Server and 1 more

CVE-2020-3182

Cisco Webex Meetings Client for MacOS Information Disclosure Vulnerability

A vulnerability in the multicast DNS (mDNS) protocol configuration of Cisco Webex Meetings Client for MacOS could allow an unauthenticated adjacent attacker to obtain sensitive information about the device on which the Webex client is running. The vulnerability exists because sensitive information is included in the mDNS reply. An attacker could exploit this vulnerability by doing an mDNS query for a particular service against an affected device. A successful exploit could allow the attacker to gain access to sensitive information.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2020-3155

Cisco Intelligent Proximity SSL Certificate Validation Vulnerability

A vulnerability in the SSL implementation of the Cisco Intelligent Proximity solution could allow an unauthenticated, remote attacker to view or alter information shared on Cisco Webex video devices and Cisco collaboration endpoints if the products meet the conditions described in the Vulnerable Products section. The vulnerability is due to a lack of validation of the SSL server certificate received when establishing a connection to a Cisco Webex video device or a Cisco collaboration endpoint. An attacker could exploit this vulnerability by using man in the middle (MITM) techniques to intercept the traffic between the affected client and an endpoint, and then using a forged certificate to impersonate the endpoint. Depending on the configuration of the endpoint, an exploit could allow the attacker to view presentation content shared on it, modify any content being presented by the victim, or have access to call controls. This vulnerability does not affect cloud registered collaboration endpoints.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Intelligence Proximity Jabber Meeting and 8 more

CVE-2020-3142

Cisco Webex Meetings Suite and Cisco Webex Meetings Online Unauthenticated Meeting Join Vulnerability

A vulnerability in Cisco Webex Meetings Suite sites and Cisco Webex Meetings Online sites could allow an unauthenticated, remote attendee to join a password-protected meeting without providing the meeting password. The connection attempt must initiate from a Webex mobile application for either iOS or Android. The vulnerability is due to unintended meeting information exposure in a specific meeting join flow for mobile applications. An unauthorized attendee could exploit this vulnerability by accessing a known meeting ID or meeting URL from the mobile device&rsquo;s web browser. The browser will then request to launch the device&rsquo;s Webex mobile application. A successful exploit could allow the unauthorized attendee to join the password-protected meeting. The unauthorized attendee will be visible in the attendee list of the meeting as a mobile attendee. Cisco has applied updates that address this vulnerability and no user action is required. This vulnerability affects Cisco Webex Meetings Suite sites and Cisco Webex Meetings Online sites releases earlier than 39.11.5 and 40.1.3.

CVSS 3.1 · 7.5 High EPSS 1.5% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Online

CVE-2020-3128

Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities are due to insufficient validation of certain elements within a Webex recording that is stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit these vulnerabilities by sending a malicious ARF or WRF file to a user through a link or email attachment and persuading the user to open the file on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

CVSS 3.1 · 7.8 High EPSS 1.9% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Webex Meetings Online Webex Meetings Server and 1 more

CVE-2020-3127

Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities are due to insufficient validation of certain elements within a Webex recording that is stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit these vulnerabilities by sending a malicious ARF or WRF file to a user through a link or email attachment and persuading the user to open the file on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

CVSS 3.1 · 7.8 High EPSS 2.4% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Webex Meetings Online Webex Meetings Server and 1 more

CVE-2020-3126

Cisco Webex Meetings Multimedia Viewer Vulnerability

vulnerability within the Multimedia Viewer feature of Cisco Webex Meetings could allow an authenticated, remote attacker to bypass security protections. The vulnerability is due to missing security warning dialog boxes when a room host views shared multimedia files. An authenticated, remote attacker could exploit this vulnerability by using the host role to share files within the Multimedia sharing feature and convincing a former room host to view that file. A warning dialog normally appears cautioning users before the file is displayed; however, the former host would not see that warning dialog, and any shared multimedia would be rendered within the user's browser. The attacker could leverage this behavior to conduct additional attacks by including malicious files within a targeted room host's browser window.

CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Server

CVE-2020-3116

Cisco Webex Centers Denial of Service Vulnerability

A vulnerability in the way Cisco Webex applications process Universal Communications Format (UCF) files could allow an attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of UCF media files. An attacker could exploit this vulnerability by sending a user a malicious UCF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit would cause the application to quit unexpectedly.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings Online Webex Meetings Server

CVE-2020-27126

Cisco Webex Meetings API Cross-Site Scripting Vulnerability

A vulnerability in an API of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability is due to improper validation of user-supplied input to an application programmatic interface (API) within Cisco Webex Meetings. An attacker could exploit this vulnerability by convincing a targeted user to follow a link designed to submit malicious input to the API used by Cisco Webex Meetings. A successful exploit could allow the attacker to conduct cross-site scripting attacks and potentially gain access to sensitive browser-based information from the system of a targeted user.

CVSS 3.1 · 6.1 Medium EPSS 1.0% KEV · Not listed

Vendors

Cisco

Products

Webex Meetings

CVE-2019-1929

Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities exist because the affected software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker could exploit these vulnerabilities by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

CVSS 3.1 · 7.8 High EPSS 1.5% KEV · Not listed

Vendors

Cisco

Products

Webex Business Suite Webex Meetings Online Webex Meetings Server

CVE-2019-1928

Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities exist because the affected software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker could exploit these vulnerabilities by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

CVSS 3.1 · 7.8 High EPSS 1.5% KEV · Not listed

Vendors

Cisco

Products

Webex Business Suite Webex Meetings Online Webex Meetings Server