CVE-2022-31131: Ownership check missing when updating or deleting mail attachments in Nextcloud mail
First published: Wed Jul 06 2022(Updated: )
Nextcloud mail is a Mail app for the Nextcloud home server product. Versions of Nextcloud mail prior to 1.12.2 were found to be missing user account ownership checks when performing tasks related to mail attachments. Attachments may have been exposed to incorrect system users. It is recommended that the Nextcloud Mail app is upgraded to 1.12.2. There are no known workarounds for this issue. ### Workarounds No workaround available ### References * [Pull request](https://github.com/nextcloud/mail/pull/6600) * [HackerOne](https://hackerone.com/reports/1579820) ### For more information If you have any questions or comments about this advisory: * Create a post in [nextcloud/security-advisories](https://github.com/nextcloud/security-advisories/discussions) * Customers: Open a support ticket at [support.nextcloud.com](https://support.nextcloud.com)
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud Mail | <1.12.2 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-31131?
CVE-2022-31131 is a vulnerability in Nextcloud Mail that allows incorrect system users to access mail attachments.
What is the severity of CVE-2022-31131?
CVE-2022-31131 has a severity of medium with a CVSS score of 4.3.
How can the Nextcloud Mail vulnerability in CVE-2022-31131 be exploited?
In Nextcloud Mail versions prior to 1.12.2, user account ownership checks were missing, allowing unauthorized access to mail attachments.
How can I fix the CVE-2022-31131 vulnerability in Nextcloud Mail?
To fix the CVE-2022-31131 vulnerability, it is recommended to update Nextcloud Mail to version 1.12.2 or later.
Are there any references for CVE-2022-31131?
Yes, you can find references for CVE-2022-31131 at the following URLs: [reference 1](https://github.com/nextcloud/mail/pull/6600), [reference 2](https://github.com/nextcloud/mail/pull/6600/commits/6dd2527be8d4f6788b449c8a8f5577628b990605), [reference 3](https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xhv7-5mhv-299j).
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