CVE-2021-34421— Retained exploded messages in Keybase Clients for Android and iOS
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I. Basic Information for CVE-2021-34421
Vulnerability Information
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Vulnerability Title
Retained exploded messages in Keybase Clients for Android and iOS
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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 POCPremium
No public POC found.
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- https://explore.zoom.us/en/trust/security/security-bulletinx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-34421
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
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