PT-2017-10153 · Owncloud+1 · Owncloud Server+1

Bugdiscloseguy · Published 2017-03-28 · Updated 2019-10-09 · CVE-2016-9462

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Nextcloud Server versions prior to 9.0.52 ownCloud Server versions prior to 9.0.4

Description The issue arises from improper verification of restore privileges when restoring a file. Specifically, the restore capability was not checking if a user has only read-only access to a share, allowing a user with read-only access to restore old versions.

Recommendations For Nextcloud Server versions prior to 9.0.52, update to version 9.0.52 or later to resolve the issue. For ownCloud Server versions prior to 9.0.4, update to version 9.0.4 or later to resolve the issue.

Exploit

Fix

Improper Access Control

Weakness Enumeration

CWE-284

CWE-275

Related Identifiers

CVE-2016-9462

Affected Products

Nextcloud Server

Owncloud Server

References · 12

• 🔥 https://hackerone.com/reports/146067 · Exploit
• https://github.com/nextcloud/server/commit/1208953ba1d4d55a18a639846bbcdd66a2d5bc5e · Patch
• https://github.com/owncloud/core/commit/23383080731d092e079986464a8c4c9ffcb79f4c · Patch
• https://github.com/owncloud/core/commit/d31720b6f1e8c8dfeb5e8805ab35ad7c8000b2f1 · Patch
• https://github.com/owncloud/core/commit/3b056fa68ce502ceb0db9b446dab3b9e7b10dd13 · Patch
• https://github.com/owncloud/core/commit/c93eca49c32428ece03dd67042772d5fa62c8d6e · Patch
• https://nextcloud.com/security/advisory/?id=nc-sa-2016-005 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-9462 · Vendor Advisory
• https://owncloud.org/security/advisory/?id=oc-sa-2016-015 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-9462 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9462 · Note
• http://securityfocus.com/bid/97285 · Note