Zoom Workplace VDI App for Windows: Improper Verification of Cryptographic Signature
CVE-2024-27244 is a high-severity improper verification of cryptographic signature vulnerability in Zoom Workplace VDI App for Windows from Zoom Video Communications, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected Zoom Workplace VDI App for Windows versions: < 5.17.10. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.1% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update vdi_windows_meeting_client to 5.17.10 or a later version.
- Update Workplace Virtual Desktop Infrastructure to 5.15.0 or 5.17.10, whichever matches your release line, or a later version.
- Read the advisory on zoom.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Zoom Video Communications | Zoom Workplace VDI App for Windows | < 5.17.10 | Not stated |
| Zoom | vdi_windows_meeting_client | before 5.17.10 | 5.17.10 |
| Zoom | Workplace Virtual Desktop Infrastructure | before 5.15.0; 5.16.0 up to, but not including, 5.17.10 | 5.15.0, 5.17.10 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 6.7 | Medium | CNA (zoom.us) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
Insufficient verification of data authenticity in the installer for Zoom Workplace VDI App for Windows may allow an authenticated user to conduct an escalation of privilege via local access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
More Improper Verification of Cryptographic Signature vulnerabilities (CWE-347)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Recent Improper Verification of Cryptographic Signature vulnerabilities
- 7.8 High severity
- 10.0 Critical severity
- 9.8 Critical severity
- 7.8 High severity
- 9.1 Critical severity
- 8.1 High severity
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