CVE-2016-9462

Public Exploit

Description

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore privileges when restoring a file. The restore capability of Nextcloud/ownCloud was not verifying whether a user has only read-only access to a share. Thus a user with read-only access was able to restore old versions.

Categories

4.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.66%
Vendor Advisory nextcloud.com Vendor Advisory owncloud.org
Affected: n/a Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/server/commit/1208953ba1d4d55a18a639846bbcdd66a2d5bc5e issue tracking third party advisory patch
https://github.com/owncloud/core/commit/c93eca49c32428ece03dd67042772d5fa62c8d6e issue tracking third party advisory patch
https://owncloud.org/security/advisory/?id=oc-sa-2016-015 patch vendor advisory
https://github.com/owncloud/core/commit/3b056fa68ce502ceb0db9b446dab3b9e7b10dd13 issue tracking third party advisory patch
https://github.com/owncloud/core/commit/d31720b6f1e8c8dfeb5e8805ab35ad7c8000b2f1 issue tracking third party advisory patch
http://www.securityfocus.com/bid/97285 vdb entry third party advisory
https://hackerone.com/reports/146067 third party advisory exploit
https://github.com/owncloud/core/commit/23383080731d092e079986464a8c4c9ffcb79f4c issue tracking third party advisory patch
https://nextcloud.com/security/advisory/?id=nc-sa-2016-005 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9462?
CVE-2016-9462 has been scored as a medium severity vulnerability.
How to fix CVE-2016-9462?
To fix CVE-2016-9462, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9462 being actively exploited in the wild?
It is possible that CVE-2016-9462 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-9462?
CVE-2016-9462 affects n/a Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4.
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