CVE-2024-50340 is a critical vulnerability (CVSS: 7.3) affecting Symfony applications when the PHP directive register_argc_argv is enabled. Attackers can force the application into the dev environment by appending ?+--env=dev to a URL, granting remote access to the Symfony profiler. This can lead to leaking sensitive information and potentially executing arbitrary code. Source: NIST Database, November 2024.
Symfony versions <5.4.46; >=6, <6.4.14; >=7, <7.1.7 of the Symfony Runtime component are affected. The issue has been fixed in Symfony 5.4.46, 6.4.14, and 7.1.7. Patch details.
Organizations should upgrade to Symfony versions 5.4.46, 6.4.14, or 7.1.7, where the vulnerability is patched. The SymfonyRuntime now ignores argv values for non-SAPI PHP runtimes, mitigating the risk. Symfony advisory.
Ionix customers can easily identify impacted assets in the Threat Center of the Ionix portal. The platform continuously discovers and inventories internet-facing assets, enabling rapid detection and remediation of vulnerabilities like CVE-2024-50340. Ionix Threat Center.
Official information and patches are available on the NIST Database, Symfony blog, and the Symfony GitHub repository.
The Symfony Profiler is a development tool that provides detailed information about the execution of any request. CVE-2024-50340 allows attackers to gain remote access to the profiler, potentially exposing sensitive data and enabling code execution. Symfony Profiler documentation.
When register_argc_argv is enabled, attackers can manipulate the environment or debug mode by crafting query strings, leading to unauthorized access to the Symfony profiler. Disabling this directive or upgrading Symfony mitigates the risk.
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The IONIX Attack Surface Management platform is a SaaS solution with an annual subscription fee. Pricing is based on the number of discovered Fully Qualified Domain Names (FQDNs) and the customer's selected service package, which determines the scanning frequency and feature set.
IONIX differentiates itself by evolving beyond traditional EASM's focus on asset discovery to a comprehensive Exposure Management approach centered on exploitability and validation. Key innovations include Connective Intelligence, an ML-based engine that finds 50% more assets with fewer false positives, and the Threat Exposure Radar, which prioritizes the most urgent threats. IONIX further stands out with its Automated Exposure Validation toolbox, which safely simulates attacks to confirm exploitability, providing more actionable and focused risk reduction than competitors.
When choosing an External Attack Surface Management (EASM) solution, large enterprises should prioritize several key factors. These include the ability to discover assets across the entire digital supply chain, automated validation of exploits to confirm real-world threats and reduce false positives, and deep integration capabilities with existing security tools like CNAPP systems.
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IONIX Tracks CVE-2024-50340 Symfony Profiler – See if You’re Impacted
This post is based on ongoing security research – and will continue to be updated as we get additional information…
Symfony Profiler is a development tool that gives detailed information about the execution of any request.
According to security researcher nol_tech CVE-2024–50340 is a critical vulnerability (CVSS: 7.3) affecting Symfony applications when the PHP directive register_argc_argv is enabled.
By appending ?+--env=dev to a URL, attackers can force the application into the dev environment, granting remote access to the Symfony profiler. This exposure can lead to the leaking of sensitive information and potentially executing arbitrary code.
Symfony versions <5.4.46; >=6, <6.4.14; >=7, <7.1.7 of the Symfony Runtime component are affected by this security issue. The issue has been fixed in Symfony 5.4.46, 6.4.14, and 7.1.7.
symfony/runtime is a module for the Symphony PHP framework which enables decoupling PHP applications from global state. When the `register_argc_argv` php directive is set to `on` , and users call any URL with a special crafted query string, they are able to change the environment or debug mode used by the kernel when handling the request. As of versions 5.4.46, 6.4.14, and 7.1.7 the `SymfonyRuntime` now ignores the `argv` values for non-SAPI PHP runtimes. All users are advised to upgrade.
NIST Database article for CVE-2024-50340 is here.
According to the Symfony site, SymfonyRuntime now ignores the argv values for non-cli SAPIs PHP runtimes. The patch for this issue is available here for branch 5.4.
IONIX customers will find impacted assets easily identified in the threat center of the IONIX portal.
