Adobe has issued emergency security updates to patch a critical flaw (CVE-2024-53961) in its ColdFusion platform, which could allow attackers to access sensitive files through path traversal exploits. With proof-of-concept (PoC) exploit code already circulating, Adobe urges administrators to prioritize this update to prevent potential attacks.

The affected versions include ColdFusion 2023 and 2021, with updates—ColdFusion 2021 Update 18 and ColdFusion 2023 Update 12—available for immediate deployment. Adobe’s "Priority 1" rating suggests a heightened risk of exploitation, emphasizing the urgency of this fix.

Why Is This Vulnerability Critical?
The flaw exploits a path traversal weakness, enabling attackers to bypass security restrictions and read files stored on targeted servers. This kind of vulnerability is particularly dangerous as it can expose sensitive information, including authentication credentials, which attackers can use for further breaches.

Although there is no confirmation of active attacks, Adobe warns users to assume a high probability of exploitation and take immediate measures.

Recommended Steps
Adobe advises administrators to:

Install the patches within 72 hours.
Apply security configurations as outlined in the ColdFusion Lockdown Guides for 2023 and 2021 versions.
Review serial filter settings to prevent insecure Wddx deserialization attacks that are commonly exploited.

CISA’s Security Alerts
The Cybersecurity and Infrastructure Security Agency (CISA) has long warned about the dangers of directory traversal vulnerabilities, labeling them as “unforgivable” due to their simplicity and severity.

CISA has also highlighted past attacks leveraging such flaws. For example:

In July 2023, federal agencies were ordered to secure ColdFusion servers against two vulnerabilities (CVE-2023-29298 and CVE-2023-38205) exploited in attacks.
In March 2023, hackers targeted outdated ColdFusion systems using CVE-2023-26360 in zero-day attacks.

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Act Now to Stay Protected
Organizations using ColdFusion should prioritize installing the latest patches and updating security measures immediately. Delays in addressing such vulnerabilities can lead to severe data breaches and compliance failures.

For more detailed information and guidance, visit Adobe’s official support documentation or refer to the ColdFusion Lockdown Guides for securing server configurations.

By addressing this vulnerability promptly, businesses can protect their critical systems and avoid falling victim to exploitation attempts.