CVE-2021-34421— Retained exploded messages in Keybase Clients for Android and iOS
Quick assessment
Affected
Zoom Video Communications Inc Keybase Client for Android
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.
Keybase是一套基于PGP技术的、支持端到端加密的社交网络平台。 Keybase Client for Android 5.8.0之前版本和Keybase Client for iOS 5.8.0之前版本存在信息泄露漏洞，该漏洞源于客户端无法正确删除用户启动消息。这可能会导致泄露本应从客户设备上删除的敏感信息。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-34421
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Retained exploded messages in Keybase Clients for Android and iOS
Source: CVE Program / CVE List V5
Vulnerability Description
The Keybase Client for Android before version 5.8.0 and the Keybase Client for iOS before version 5.8.0 fails to properly remove exploded messages initiated by a user if the receiving user places the chat session in the background while the sending user explodes the messages. This could lead to disclosure of sensitive information which was meant to be deleted from the customer's device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Keybase 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keybase是一套基于PGP技术的、支持端到端加密的社交网络平台。 Keybase Client for Android 5.8.0之前版本和Keybase Client for iOS 5.8.0之前版本存在信息泄露漏洞，该漏洞源于客户端无法正确删除用户启动消息。这可能会导致泄露本应从客户设备上删除的敏感信息。
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 | Keybase Client for Android | unspecified ~ 5.8.0 | - |
|
| Zoom Video Communications Inc | Keybase Client for iOS | unspecified ~ 5.8.0 | - |
|
II. Public POCs for CVE-2021-34421
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-34421
请登录查看更多情报信息。
Other References for CVE-2021-34421 (1)
-
https://explore.zoom.us/en/trust/security/security-bulletin x_refsource_MISC
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-2021-34419 | 3.7 LOW | HTML injection in Zoom Linux client |
IV. Related Vulnerabilities
Same vendor: Zoom Video Communications Inc
-
CVE-2023-28596
Local Privilege Escalation in Zoom for macOS Installers -
CVE-2023-28597
Improper trust boundary implementation for SMB in Zoom Clien -
CVE-2023-22881
Denial of Service in Zoom Clients -
CVE-2023-22882
Denial of Service in Zoom Clients -
CVE-2023-22880
Information Disclosure in Zoom for Windows Clients
V. Comments for CVE-2021-34421
No comments yet