CVE-2021-41178

Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, a file traversal vulnerability makes an attacker able to download arbitrary SVG images from the host system, including user provided files. This could also be leveraged into a XSS/phishing attack, an attacker could upload a malicious SVG file that mimics the Nextcloud login form and send a specially crafted link to victims. The XSS risk here is mitigated due to the fact that Nextcloud employs a strict Content-Security-Policy disallowing execution of arbitrary JavaScript. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5 or 22.2.0. There are no known workarounds aside from upgrading.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*
cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*
cpe:2.3:a:nextcloud:server:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:25

Type Values Removed Values Added
References () https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jp9c-vpr3-m5rf - Third Party Advisory () https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jp9c-vpr3-m5rf - Third Party Advisory
References () https://github.com/nextcloud/server/pull/28726 - Patch, Third Party Advisory () https://github.com/nextcloud/server/pull/28726 - Patch, Third Party Advisory
References () https://hackerone.com/reports/1302155 - Permissions Required () https://hackerone.com/reports/1302155 - Permissions Required
References () https://security.gentoo.org/glsa/202208-17 - Third Party Advisory () https://security.gentoo.org/glsa/202208-17 - Third Party Advisory
CVSS v2 : 4.0
v3 : 6.5
v2 : 4.0
v3 : 8.8

Information

Published : 2021-10-25 22:15

Updated : 2024-11-21 06:25


NVD link : CVE-2021-41178

Mitre link : CVE-2021-41178

CVE.ORG link : CVE-2021-41178


JSON object : View

Products Affected

nextcloud

  • server
CWE
CWE-23

Relative Path Traversal

CWE-434

Unrestricted Upload of File with Dangerous Type

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')