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CVE-2021-34419— HTML injection in Zoom Linux client

Quick assessment

Affected
Zoom Video Communications Inc Zoom Client for Meetings for Ubuntu Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ZOOM Client是美国ZOOM公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client for Meetings 存在安全漏洞，该漏洞源于在Ubuntu Linux 5.1.0之前的Zoom Client for Meetings中，在会议中屏幕共享过程中向用户发送远程控制请求时存在HTML注入漏洞。 这可能使会议参与者成为社会工程攻击的目标。

CVSS 3.7 · Low EPSS 0.62% · P48
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I. Basic Information for CVE-2021-34419

Vulnerability Information
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Vulnerability Title
HTML injection in Zoom Linux client
Source: CVE Program / CVE List V5
Vulnerability Description
In the Zoom Client for Meetings for Ubuntu Linux before version 5.1.0, there is an HTML injection flaw when sending a remote control request to a user in the process of in-meeting screen sharing. This could allow meeting participants to be targeted for social engineering attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ZOOM Client 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZOOM Client是美国ZOOM公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client for Meetings 存在安全漏洞，该漏洞源于在Ubuntu Linux 5.1.0之前的Zoom Client for Meetings中，在会议中屏幕共享过程中向用户发送远程控制请求时存在HTML注入漏洞。 这可能使会议参与者成为社会工程攻击的目标。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zoom Video Communications Inc Zoom Client for Meetings for Ubuntu Linux unspecified ~ 5.1.0 -

II. Public POCs for CVE-2021-34419

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III. Intelligence Information for CVE-2021-34419

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Other References for CVE-2021-34419 (1)

Same Patch Batch · Zoom Video Communications Inc · 2021-11-11 · 6 CVEs total

CVE-2021-34417 7.9 HIGH Authenticated remote command execution with root privileges via web console in MMR
CVE-2021-34422 7.2 HIGH Path traversal of file names in Keybase Client for Windows
CVE-2021-34420 4.7 MEDIUM Zoom Windows installation executable signature bypass
CVE-2021-34418 4.0 MEDIUM Pre-auth Null pointer crash in on-premise web console
CVE-2021-34421 3.7 LOW Retained exploded messages in Keybase Clients for Android and iOS

IV. Related Vulnerabilities

Same vendor: Zoom Video Communications Inc

V. Comments for CVE-2021-34419

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