Vulnerability · Published Dec 1, 2022 · Assigned by GitHub_M

CVE-2022-41970Nextcloud Server's disabled download shares still allow download through preview images

Low 2.6

In plain English

A low-severity improper access control in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)2.6Low

Exploit odds (30 days)0.7%top 47.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nextcloud Server is an open source personal cloud server. Prior to versions 24.0.7 and 25.0.1, disabled download shares still allow download through preview images. Images could be downloaded and previews of documents (first page) can be downloaded without being watermarked. Versions 24.0.7 and 25.0.1 contain a fix for this issue. No known workarounds are available.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	< 24.0.7>= 25.0.0, < 25.0.1

Weakness: CWE-284, CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9mh6-cph8-772c x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/34788 x_refsource_MISC
https://hackerone.com/reports/1745766 x_refsource_MISC