CVE-2021-41178
Summary
| CVE | CVE-2021-41178 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-10-25 22:15:00 UTC |
| Updated | 2022-10-25 20:53:00 UTC |
| Description | 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. |
Risk And Classification
Problem Types: CWE-434 | CWE-23
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Nextcloud: Multiple Vulnerabilities (GLSA 202208-17) — Gentoo security | GENTOO | security.gentoo.org | |
| HackerOne | MISC | hackerone.com | |
| File Traversal affecting SVG files on Nextcloud Server · Advisory · nextcloud/security-advisories · GitHub | CONFIRM | github.com | |
| Check if SVG path is valid by LukasReschke · Pull Request #28726 · nextcloud/server · GitHub | MISC | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.