Vulnerability · Published Dec 8, 2020 · Assigned by GitHub_M
CVE-2020-26255PHP Phar archives could be uploaded and executed in Kirby
Medium 6.8
In plain English
A medium-severity unrestricted file upload in kirby from getkirby. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | getkirby/cms | 3.4.5 | GHSA-g3h8-cg9x-47qw |
| Packagist | getkirby/panel | 2.5.14 | GHSA-g3h8-cg9x-47qw |
Affected products (as reported)
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
References
- https://packagist.org/packages/getkirby/cms x_refsource_MISC
- https://packagist.org/packages/getkirby/panel x_refsource_MISC
- https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qw x_refsource_CONFIRM
- https://github.com/getkirby/kirby/releases/tag/3.4.5 x_refsource_MISC
- https://github.com/getkirby/kirby/commit/db8f371b13036861c9cc5ba3e85e27f73fce5e09 x_refsource_MISC
- https://github.com/getkirby-v2/panel/commit/5a569d4e3ddaea2b6628d7ec1472a3e8bc410881 x_refsource_MISC