Decoded: SMB Cybersecurity

Critical RCE Vulnerability in Craft CMS

Published Date: December 19, 2024

Package Affected Versions Patched Versions Severity
📦 craftcms/cms (Composer) >= 5.0.0-RC1, < 5.5.2 5.5.2 Critical

Description

Summary of the Vulnerability


Craft CMS has a critical remote code execution (RCE) vulnerability. The issue arises when the PHP configuration setting register_argc_argv is enabled. Attackers could exploit this to execute arbitrary code, putting websites and servers at significant risk.

 

Impact


If register_argc_argv is enabled in your PHP configuration (php.ini), your Craft CMS installation is vulnerable. This setting allows PHP to expose script arguments via $argv and $argc, which attackers can manipulate in certain scenarios.

 

How to Check if You’re Affected



  1. Locate your php.ini file. This is typically found in /etc/php/{version}/cli/php.ini on Linux or via your web server configuration.

  2. Look for the line:


register_argc_argv = On


If it is set to On, your system is at risk.

Patches & Workarounds

Solution


Patches



  • Upgrade Immediately:

    • For Craft CMS 4.x, update to 4.13.2.

    • For Craft CMS 5.x, update to 5.5.2.




To update, use Composer:


composer update craftcms/cms



Workarounds


If upgrading isn’t an option right now:

  • Disable register_argc_argv in php.ini:




register_argc_argv = Off



  • Restart your web server to apply the change:


For Apache:


sudo systemctl restart apache2


For Nginx:


sudo systemctl restart nginx

References

https://nvd.nist.gov/vuln/detail/CVE-2024-56145
Share this:

  • Preventing QR Code Phishing Attacks in Small Businesses

    QR codes have become a staple in small businesses. From quick payments to instant access to menus and promotions, they offer speed and convenience. However, with increased adoption comes a growing threat: QR code phishing, also known as quishing. Cybercriminals exploit QR codes to trick customers into sharing sensitive data or downloading malware.

  • How a Small Business Survived a Ransomware Attack: Costs, Lessons, and Practical Cybersecurity Tips

    Introduction In December 2024, a small marketing agency with just 20 employees faced a ransomware attack that locked them out of critical client files during the peak holiday campaign season. This case study explores how the attack happened, how the business responded, and what lessons other small and medium-sized businesses (SMBs) can take away.

  • Sophos Firewall Vulnerabilities: Critical Fixes You Shouldn’t Ignore

    Sophos has rolled out hotfixes to fix three serious security flaws in its firewall products. These vulnerabilities could let attackers execute remote code and gain privileged system access under specific conditions. While there’s no sign of active exploitation, the risks are too significant to overlook.

  • Case Study: How a Small Bakery Lost Its Recipe — and Customer Data

    The Incident In mid-2024, “Flour Power,” a small bakery in Wisconsin, fell victim to a data breach. The owners had just implemented a new online ordering system. The system made it easy for customers to place orders and pay online, but it also made things easy for attackers.

  • Blockchain-Based Backup Solutions: Ensuring Immutable and Decentralized Data Protection

    Data protection is a challenge. From accidental deletions to malicious attacks, the risks are endless. Traditional backup systems, while useful, come with vulnerabilities—centralized storage, potential tampering, and single points of failure. Enter blockchain technology, a buzzword that’s more than just hype. Blockchain-based backup solutions promise to revolutionize how we protect and store data, offering immutability,…

  • New Cybersecurity Rules to Protect Sensitive US Data

    The US Cybersecurity and Infrastructure Security Agency (CISA) is rolling out strict new security rules for critical sectors to prevent sensitive data from falling into the wrong hands. Recent cyberattacks have exposed major vulnerabilities, making these changes urgent and necessary. Here’s what you need to know.

Ads Blocker Image Powered by Code Help Pro

Ads Blocker Detected!!!

We have detected that you are using extensions to block ads. Please support us by disabling these ads blocker.