Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Cybercrime

Hackers Start Exploiting Drupalgeddon2 Vulnerability

Attempts to exploit a recently patched vulnerability in the Drupal content management system (CMS) were spotted by researchers shortly after someone published a proof-of-concept (PoC) exploit.

Attempts to exploit a recently patched vulnerability in the Drupal content management system (CMS) were spotted by researchers shortly after someone published a proof-of-concept (PoC) exploit.

In late March, Drupal developers rolled out an update to address CVE-2018-7600, a highly critical remote code execution flaw that can be exploited to take full control of a site. The security hole affects Drupal 6, 7 and 8, and patches have been released for each of the impacted versions – Drupal 6 is no longer supported since February 2016, but a patch has still been created.

Drupalgeddon2

Experts warned at the time that exploitation of the vulnerability, dubbed Drupalgeddon2, was imminent. However, it took roughly two weeks for a proof-of-concept (PoC) exploit to become publicly available.

Researchers at Check Point and Drupal experts at Dofinity worked together to uncover the vulnerability and on Thursday they published a detailed technical analysis.

“In brief, Drupal had insufficient input sanitation on Form API (FAPI) AJAX requests,” they explained in a post on the Check Point blog. “As a result, this enabled an attacker to potentially inject a malicious payload into the internal form structure. This would have caused Drupal to execute it without user authentication. By exploiting this vulnerability an attacker would have been able to carry out a full site takeover of any Drupal customer.”

Shortly after Check Point and Dofinity published their analysis, Vitalii Rudnykh published a PoC on GitHub for “educational or information purposes,” which others confirmed to be functional. Once the PoC was made public, Sucuri and the SANS Internet Storm Center started seeing attempts to exploit Drupalgeddon2.

At the time of writing, there are no reports of websites being hacked via CVE-2018-7600. Attackers are apparently scanning the web in search for vulnerable servers. The payloads spotted by SANS researchers use simple commands such as echo, phpinfo, whoami and touch.

Web security services, including Cloudflare’s Web Application Firewall (WAF), should be able to block attacks exploiting the vulnerability.

Advertisement. Scroll to continue reading.

“The exploit attempts are currently arriving at a pretty brisk pace,” said ISC handler Kevin Liston. Sucuri founder and CTO Daniel Cid also warned that the number of exploit attempts is expected to grow.

The original Drupalgeddon vulnerability, disclosed in October 2014, was first exploited just 7 hours after a patch was released and it was leveraged by cybercriminals for at least another two years.

Related: Flaw in Drupal Module Exposes 120,000 Sites to Attacks

Related: Several Vulnerabilities Patched in Drupal

Written By

Eduard Kovacs (@EduardKovacs) is a managing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Trending

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Gain valuable insights from industry professionals who will help guide you through the intricacies of industrial cybersecurity.

Register

Join us for an in depth exploration of the critical nature of software and vendor supply chain security issues with a focus on understanding how attacks against identity infrastructure come with major cascading effects.

Register

Expert Insights

Related Content

Vulnerabilities

Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Cybercrime

The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.

Cybercrime

As it evolves, web3 will contain and increase all the security issues of web2 – and perhaps add a few more.

Cybercrime

A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...

Cybercrime

Luxury retailer Neiman Marcus Group informed some customers last week that their online accounts had been breached by hackers.

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...

Vulnerabilities

A researcher at IOActive discovered that home security systems from SimpliSafe are plagued by a vulnerability that allows tech savvy burglars to remotely disable...