CVE-2017-16151 in ElectronJS
Summary
by MITRE
Based on details posted by the ElectronJS team; A remote code execution vulnerability has been discovered in Google Chromium that affects all recent versions of Electron. Any Electron app that accesses remote content is vulnerable to this exploit, regardless of whether the [sandbox option](https://electron.atom.io/docs/api/sandbox-option) is enabled.
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Analysis
by VulDB Data Team • 02/16/2020
This vulnerability represents a critical remote code execution flaw within the Chromium rendering engine that forms the foundation of Electron applications. The issue stems from improper handling of certain JavaScript objects during the execution of remote content, creating a pathway for attackers to execute arbitrary code on affected systems. The vulnerability affects all recent versions of Electron framework, making it particularly dangerous as it impacts a vast ecosystem of desktop applications built using this technology. The ElectronJS team's disclosure highlights that the flaw exists at the core Chromium level, meaning that any application leveraging Electron's web rendering capabilities becomes vulnerable when processing untrusted remote content.
The technical implementation of this vulnerability exploits memory corruption issues within Chromium's JavaScript engine, specifically targeting how objects are managed during remote content execution. Attackers can craft malicious web content that when loaded into an Electron application triggers a memory corruption condition, allowing them to execute arbitrary code with the privileges of the affected application. The exploit does not require user interaction beyond visiting a malicious website or loading compromised remote resources, making it particularly insidious. Even applications that have enabled the sandbox option remain vulnerable because the flaw occurs at a lower level in the Chromium architecture that the sandbox cannot fully protect against.
The operational impact of this vulnerability extends across numerous Electron-based applications including popular desktop software such as Visual Studio Code, Slack, Discord, and many others that utilize the Electron framework. Organizations relying on these applications face significant risk as attackers can leverage this vulnerability to gain complete control over affected systems, potentially leading to data exfiltration, persistence mechanisms, and lateral movement within networks. The vulnerability's broad scope means that security teams must urgently assess their entire Electron application portfolio, regardless of whether sandboxing is implemented, as traditional security controls may not provide adequate protection against this specific exploitation vector.
Mitigation strategies should focus on immediate version updates to patched Electron releases that address the underlying Chromium vulnerability. Organizations must prioritize updating their Electron applications to versions that include the necessary Chromium fixes, typically available through the Electron framework's release notes and security advisories. Additionally, implementing network-level controls such as content filtering and web application firewalls can provide additional protection layers. The vulnerability's classification under CWE-119 indicates it involves memory safety issues, making proper input validation and memory management practices essential. Security teams should also consider implementing application whitelisting and restricting remote content loading where possible, though these measures are not comprehensive given the nature of the exploit. The ATT&CK framework categorizes this as a remote code execution technique, emphasizing the need for robust endpoint detection and response capabilities to identify potential exploitation attempts.