October CMS Safe Mode bypass leads to authenticated Remote Code Execution
The advisory, in context
Impact
This vulnerability only affects installations that rely on the safe mode restriction, commonly used when providing public access to the admin panel. Assuming an attacker has access to the admin panel and permission to open the "Editor" section, they can bypass the Safe Mode (cms.safe_mode) restriction to introduce new PHP code in a CMS template using a specially crafted request.
Patches
The issue has been patched in v2.2.34 and v3.0.66
References
Credits to:
- David Miller
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
From 2.0.0 before 2.2.34
Fixed in 2.2.34
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.2.34"
}
],
"type": "ECOSYSTEM"
}
],
"versions": []
}From 3.0.0 before 3.0.66
Fixed in 3.0.66
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.66"
}
],
"type": "ECOSYSTEM"
}
],
"versions": []
}