octobercms/october · Security
October/System authenticated file write leads to remote code execution
- GHSA ID
- GHSA-wv23-pfj7-2mjj
- CVE ID
- CVE-2021-32649
- Severity
- high
- Published
- Updated
- CVSS
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
Impact
Assuming an attacker with "create, modify and delete website pages" privileges in the backend is able to execute PHP code by running specially crafted Twig code in the template markup.
Patches
Issue has been patched in Build 473 and v1.1.6
Workarounds
Apply https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26 to your installation manually if you are unable to upgrade.
References
Credits to: • David Miller
For more information
If you have any questions or comments about this advisory:
- Email us at [email protected]
CWEs
- CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-94 · Improper Control of Generation of Code ('Code Injection')