CVE-2025-25034 Scanner

SugarCRM is a popular customer relationship management (CRM) software used by organizations to manage and analyze customer interactions and data throughout the customer lifecycle. It is widely used by businesses of all sizes, from small enterprises to large corporations, for sales force automation, marketing, customer support, and more. Companies deploy SugarCRM to improve business relationships, streamline processes, and drive sales growth. By having a centralized system, businesses can ensure that their customer interactions are personalized, timely, and informed, leading to improved customer satisfaction and retention.

The vulnerability in question involves a Remote Code Execution (RCE) vulnerability in the SugarCRM software due to improper validation of PHP serialized input in the SugarRestSerialize.php script. At its core, this vulnerability allows an unauthenticated attacker to execute arbitrary code within the application's context by submitting crafted serialized data. If exploited, this can lead to a full system compromise, allowing the attacker to potentially gain full control over the affected system and access sensitive customer data managed by the CRM. This particular vulnerability underscores the importance of ensuring robust input validation and secure coding practices in web applications.

The technical details of this vulnerability center around the improper sanitization of the `rest_data` parameter before it is passed to the `unserialize()` function in the SugarRestSerialize.php script. An attacker can craft a serialized data input containing malicious object declarations that, when deserialized, execute attacker-controlled code. In practice, an attacker can craft a POST request to the `/service/v4/rest.php` endpoint, leveraging the deserialization mechanism to introduce a file capable of arbitrary code execution. This specific vulnerability affects versions prior to 6.5.24, 6.7.13, 7.5.2.5, 7.6.2.2, and 7.7.1.0 of SugarCRM, highlighting the need for businesses to maintain updated versions of their software.

If exploited, this vulnerability can lead to severe consequences for the affected system. Successful exploitation can result in unauthorized access to critical business data, disruption of business operations, and potential data breaches. The compromised system might be used as a launchpad for further attacks, compromising even more resources within the network. Businesses relying on SugarCRM for customer relationship management could see trust eroded, with potential reputational damage and financial losses due to unauthorized data access and the resulting fallout.

REFERENCES

• https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/sugarcrm_rest_unserialize_exec.rb
• https://support.sugarcrm.com/resources/security/sugarcrm-sa-2016-001/
• https://nvd.nist.gov/vuln/detail/CVE-2025-25034
• https://karmainsecurity.com/KIS-2016-07
• https://vulncheck.com/advisories/sugarcrm-php-deserialization-rce