CVE-2017-16244 October CMS CSRF

High 8.8 Published Updated

An attacker can take over a victim's account in OctoberCMS by bypassing CSRF protections via a specific postback variable.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2017-16244?

CVE-2017-16244 is a high-severity vulnerability in Octobercms October, published on 1 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-Site Request Forgery exists in OctoberCMS 1.0.426 (aka Build 426) due to improper validation of CSRF tokens for postback handling, allowing an attacker to successfully take over the victim's account. The attack bypasses a protection mechanism involving X-CSRF headers and CSRF tokens via a certain _handler postback variable.

Weakness: CWE-352

Which versions are affected by CVE-2017-16244?

2 open source packages ship an affected version, including october/october. It affects 1 product.

PackageAffectedFixed in
october/october PackagistAll versions1.0.427
october/october PackagistAll versions1.0.427

Products include Octobercms October.

How do I fix CVE-2017-16244?

Upgrade october/october to 1.0.427 or later.

Is CVE-2017-16244 being exploited?

There is no known exploitation of CVE-2017-16244 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

All Octobercms October vulnerabilities

Sources

Also known as GHSA-vm6r-4p4v-232x.

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