Users can delete external storage mount points
CVE-2023-39962

7.7HIGH

Key Information:

Vendor

Nextcloud
Status
Security-advisories
Vendor
CVE Published:
10 August 2023

What is CVE-2023-39962?

Nextcloud Server, a popular open-source cloud storage solution, is affected by a data deletion vulnerability that allows unauthorized users to delete personal or global external storage. This issue impacts multiple versions of the server, where prior configurations can be rendered inaccessible. The vulnerability enables malicious actors to compromise external storage management and disrupt services for all users. To mitigate risks, it is advisable to apply the patches provided in the latest versions or temporarily disable the 'files_external' app until a secure version is deployed.

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Deploy the Patch

Affected Version(s)

security-advisories >= 19.0.0, < 19.0.13.10 < 19.0.0, 19.0.13.10

security-advisories >= 20.0.0, < 20.0.14.15 < 20.0.0, 20.0.14.15

security-advisories >= 21.0.0, < 21.0.9.13 < 21.0.0, 21.0.9.13

References

https://github.com/nextcloud/security-advisories/security...
x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/39323
x_refsource_MISC
https://hackerone.com/reports/2047168
x_refsource_MISC

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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