CVE-2021-34422

The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. 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.

• CVE ID
• CVE-2021-34422

• Assigner
• security@zoom.us

• Vulnerability Status
• Analyzed

• Published Version
• 2021-11-11T23:15:10

• Last Modified Date
• 2021-11-16T19:42:29

• Version
• 2.0

• Vector String
• AV:N/AC:M/Au:S/C:P/I:P/A:P

• Access Vector
• NETWORK

• Access Compatibility
• MEDIUM

• Authentication
• SINGLE

• Confidentiality Impact
• PARTIAL

• Integrity Impact
• PARTIAL

• Availability Impact
• PARTIAL

• Base Score
• 6

• Severity
• MEDIUM

• Exploitability Score
• 6.8

• Impact Score
• 6.4

• Version
• 3.1

• Vector String
• CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

• Attack Vector
• NETWORK

• Attack Compatibility
• LOW

• Privileges Required
• LOW

• User Interaction
• REQUIRED

• Scope
• CHANGED

• Confidentiality Impact
• HIGH

• Availability Impact
• HIGH

• Base Score
• 9

• Base Severity
• CRITICAL

• Exploitability Score
• 2.3

• Impact Score
• 6