CVE-2025-25692: PrestaShop 8.2.0 PHAR Deserialization Vulnerability Leads to Remote Code Execution
Hello security enthusiasts! Today we're diving into CVE-2025-25692, a critical vulnerability affecting PrestaShop, a popular e-commerce platform. This flaw could allow attackers to execute arbitrary code on vulnerable servers. Let's break it down.
Vulnerability Details
- CVE ID: CVE-2025-25692
- Description: A PHAR deserialization vulnerability exists in the
_getHeadersfunction of PrestaShop v8.2.0. This allows remote attackers to achieve remote code execution by sending a specially crafted POST request. - CVSS Score: 6.5 (Medium)
- CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CVSS Explanation: The CVSS vector indicates that this is a network-based attack (AV:N) with low complexity (AC:L) that does not require any privileges (PR:N) or user interaction (UI:N). While it doesn't fully compromise the system (S:U), it can lead to limited information disclosure (C:L) and data modification (I:L), with no impact on system availability (A:N).
- Exploit Requirements: Attackers need to be able to send a POST request to the vulnerable server.
- Affected Vendor: PrestaShop
- Affected Product: PrestaShop
- Affected Version: 8.2.0
- CWE: CWE-502 (Deserialization of Untrusted Data) and CWE-77 (Command Injection). CWE-502 occurs when an application deserializes data from an untrusted source without proper validation. CWE-77 is a command injection attack that occurs when an application includes untrusted data in a command that it then executes on the system.
Timeline of Events
- 2025-07-30: CVE-2025-25692 publicly disclosed.
Exploitability & Real-World Risk
PrestaShop is a widely used e-commerce platform, making this vulnerability a significant threat. Exploiting this vulnerability allows attackers to execute arbitrary code on the server, potentially leading to full system compromise. An attacker could upload malicious files, steal sensitive data, deface the website, or even use the server as a launching point for further attacks. Since it is a deserialization attack, it can bypass common input validation routines that check for XSS or SQL injection.
Recommendations
- Patch: Upgrade to a patched version of PrestaShop as soon as it becomes available. Watch for security advisories from PrestaShop.
- Web Application Firewall (WAF): Implement or update your WAF rules to detect and block malicious requests targeting this vulnerability.
- Input Validation: Ensure that all user inputs are properly validated and sanitized. Although this might not prevent the PHAR deserialization directly, it adds another layer of security.
Technical Insight
The vulnerability lies in the _getHeaders function where untrusted data is being deserialized. PHP's PHAR archives can be exploited if an application blindly deserializes them. By crafting a malicious PHAR archive and tricking the application into processing it, an attacker can execute arbitrary code. This typically happens because the application treats the PHAR archive like any other file without checking its integrity or origin.
Credit to Researcher(s)
Credit to the researcher(s) who discovered and reported this vulnerability (as available).
References
- PrestaShop Official Website
- Detailed Exploit Information (if available)
- PrestaShop GitHub Repository
Tags
#PrestaShop #CVE-2025-25692 #PHARDeserialization #RCE #RemoteCodeExecution #eCommerceSecurity #PHP
Summary: CVE-2025-25692 is a PHAR deserialization vulnerability in the _getHeaders function of PrestaShop 8.2.0. It allows remote attackers to execute arbitrary code by sending a crafted POST request, potentially leading to full system compromise. Users should upgrade to a patched version as soon as possible and implement WAF rules to mitigate the risk.
CVE ID: CVE-2025-25692
Risk Analysis: Successful exploitation can lead to full system compromise, allowing attackers to upload malicious files, steal sensitive data, deface the website, or use the server as a launching point for further attacks.
Recommendation: Upgrade to a patched version of PrestaShop as soon as it becomes available. Implement or update your Web Application Firewall (WAF) rules to detect and block malicious requests targeting this vulnerability. Ensure all user inputs are properly validated and sanitized.
Timeline
- 2025-07-30: CVE-2025-25692 publicly disclosed.