Child Theme Creator by Orbisius <= 1.2.7 - Arbitrary File Write
Strategic Overview
- Status
- Patched in 1.2.8
- Affected Plugin
- Child Theme Creator by Orbisius
- Affected Version
< 1.2.8- CVSS
- 6.5Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2015-9456
At a glance
CVE-2015-9456 is a medium-severity Missing Authorization vulnerability in the Child Theme Creator by Orbisius WordPress plugin, affecting versions < 1.2.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). The issue is fixed in version 1.2.8; sites on affected versions should update now. Disclosed July 2015, reported by Marcin Probola.
Vulnerability Overview
The orbisius-child-theme-creator plugin before 1.2.8 for WordPress has incorrect access control for file modification via the wp-admin/admin-ajax.php?action=orbisius_ctc_theme_editor_ajax&sub_cmd=save_file theme_1, theme_1_file, or theme_1_file_contents parameter.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on integrity.
CWE-862: Missing Authorization
Reaching this weakness in Child Theme Creator by Orbisius < 1.2.8 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Child Theme Creator by Orbisius the fix is 1.2.8: builds < 1.2.8 are affected, anything from 1.2.8 onward is not.
Remediation
Update to version 1.2.8, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Child Theme Creator by Orbisius 1.2.8 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Child Theme Creator by Orbisius
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