CVE-2021-37617

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Summary

CVECVE-2021-37617
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-08-18 18:15:00 UTC
Updated2022-10-25 16:18:00 UTC
DescriptionThe Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. The Nextcloud Desktop Client invokes its uninstaller script when being installed to make sure there are no remnants of previous installations. In versions 3.0.3 through 3.2.4, the Client searches the `Uninstall.exe` file in a folder that can be written by regular users. This could lead to a case where a malicious user creates a malicious `Uninstall.exe`, which would be executed with administrative privileges on the Nextcloud Desktop Client installation. This issue is fixed in Nextcloud Desktop Client version 3.3.0. As a workaround, do not allow untrusted users to create content in the `C:\` system folder and verify that there is no malicious `C:\Uninstall.exe` file on the system.

Risk And Classification

Problem Types: CWE-427

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextcloud Desktop All All All All

References

ReferenceSourceLinkTags
Run legacy uninstall exe in a secure way by allexzander · Pull Request #3497 · nextcloud/desktop · GitHub MISC github.com
Untrusted Search Path in Nextcloud Desktop Client · Advisory · nextcloud/security-advisories · GitHub CONFIRM github.com
HackerOne MISC hackerone.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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