CVE-2022-31131 is a vulnerability in Nextcloud Mail
Published on July 6, 2022
Ownership check missing when updating or deleting mail attachments in Nextcloud mail
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)
Vulnerability Analysis
CVE-2022-31131 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2022-31131. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2022-31131 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2022-31131
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Affected Versions
nextcloud security-advisories Version < 1.12.2 is affected by CVE-2022-31131Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.