Description (CNA)
The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, causing the authorization dispatcher to resolve an unconditionally-true handler instead of the proper modification check. Attackers can chain this flaw to write a malicious .html skeleton file, disclose sensitive configuration files containing the site secret, and forge a signed ajax context to execute the uploaded skeleton, achieving arbitrary PHP code execution as the web-server user.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| SPIP / SPIP Crayons Plugin | affected 0 before 3.5.0 |
CWE
CWE-862
References
- https://blog.spip.net/Mises-a-jour-de-securite-critique-plugins-Crayons-et-Simplog.html?lang=fr
- https://plugins.spip.net/crayons.html?lang=fr
- https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rce
ADP enrichment
No English description supplied.
No references supplied.