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A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine.
If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution. Keybase addressed this issue in the 5. Description : The Keybase Client for Android before version 5. Zoom addressed this issue in the 5.
This could allow meeting participants to be targeted for social engineering attacks. This could lead to a crash of the login service. Source : Reported by Jeremy Brown. This could lead to remote command injection by a web portal administrator. Description : The network address administrative settings web portal for the Zoom on-premise Meeting Connector before version 4.
Description : The network proxy page on the web portal for the Zoom on-premise Meeting Connector Controller before version 4. This could allow a standard user to write their own malicious application to the plugin directory, allowing the malicious application to execute in a privileged context.
Description : During the installation process for all versions of the Zoom Client for Meetings for Windows before 5. If the installer was launched with elevated privileges such as by SCCM this can result in a local privilege escalation.
Description : A user-writable application bundle unpacked during the install for all versions of the Zoom Plugin for Microsoft Outlook for Mac before 5. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.
Description : A user-writable directory created during the installation of the Zoom Client for Meetings for Windows version prior to version 5. This would allow an attacker to overwrite files that a limited user would otherwise be unable to modify. This could lead to remote code execution in an elevated privileged context.
Description : A heap based buffer overflow exists in all desktop versions of the Zoom Client for Meetings before version 5. This Finding was reported to Zoom as a part of Pwn20wn Vancouver. The target must have previously accepted a Connection Request from the malicious user or be in a multi-user chat with the malicious user for this attack to succeed. The attack chain demonstrated in Pwn20wn can be highly visible to targets, causing multiple client notifications to occur.
Zoom introduced several new security mitigations in Zoom Windows Client version 5. We are continuing to work on additional measures to resolve this issue across all affected platforms.
The vulnerability is due to insufficient signature checks of dynamically loaded DLLs when loading a signed executable. An attacker could exploit this vulnerability by injecting a malicious DLL into a signed Zoom executable and using it to launch processes with elevated permissions. Description : A vulnerability in how the Zoom Windows installer handles junctions when deleting files could allow a local Windows user to delete files otherwise not deletable by the user.
The vulnerability is due to insufficient checking for junctions in the directory from which the installer deletes files, which is writable by standard users. A malicious local user could exploit this vulnerability by creating a junction in the affected directory that points to protected system files or other files to which the user does not have permissions.
Upon running the Zoom Windows installer with elevated permissions, as is the case when it is run through managed deployment software, those files would get deleted from the system. Zoom addressed this issue in the 4. Description : A vulnerability in the Zoom MacOS client could allow an attacker to download malicious software to a victim's device.
The vulnerability is due to improper input validation and validation of downloaded software in the ZoomOpener helper application. An attacker could exploit the vulnerability to prompt a victim's device to download files on the attacker's behalf. A successful exploit is only possible if the victim previously uninstalled the Zoom Client.
Description : A vulnerability in the MacOS Zoom and RingCentral clients could allow a remote, unauthenticated attacker to force a user to join a video call with the video camera active. The vulnerability is due to insufficient authorization controls to check which systems may communicate with the local Zoom Web server running on port An attacker could exploit this vulnerability by creating a malicious website that causes the Zoom client to automatically join a meeting set up by the attacker.
Zoom implemented a new Video Preview dialog that is presented to the user before joining a meeting in Client version 4. This dialog enables the user to join the meeting with or without video enabled and requires the user to set their desired default behavior for video. Source : Discovered by Jonathan Leitschuh. Description : A vulnerability in the MacOS Zoom client could allow a remote, unauthenticated attacker to trigger a denial-of-service condition on a victim's system.
An attacker could exploit this vulnerability by creating a malicious website that causes the Zoom client to repeatedly try to join a meeting with an invalid meeting ID. Zoom Plugin for Microsoft Outlook The Zoom Plugin for Outlook installs a button on the Microsoft Outlook tool bar to enable you to start or schedule a meeting with one-click. View tutorial for more information. Zoom Extension for Browsers The Zoom Extension for Browsers allows you to start or schedule your Zoom meeting with a single click from your browser or within Google calendar.
Currently available for Chrome and Firefox. Zoom Mobile Apps Start, join and schedule meetings; send group text, images and push-to-talk messages on mobile devices. Download in. Zoom Rooms for Conference Rooms and Touchscreen Displays Install the Zoom Rooms Win application to setup your conference room for one-touch meeting and calendar integration.
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