The logical coding error in the Web Clipper extension could have allowed an attacker to bypass the browser’s same origin policy, granting the attacker code execution privileges in Iframes beyond Evernote’s domain.

Guardio disclosed the vulnerabilities to Evernote during the last week of May, which prompted Evernote to address them and roll out a complete fix - within less than a week.ĭue to Evernote’s widespread popularity, this issue had the potential of affecting its consumers and companies who use the extension – about 4,600,000 users at the time of discovery. The vulnerability, a universal cross-site scripting (UXSS) marked CVE-2019-12592, was discovered as part of Guardio’s ongoing security analysis efforts using a combination of internal technology and researchers.

Guardio bundles a complete online protection suite where it matters most - your browser. Combined with strong anti-phishing capabilities, malicious ad blocking and information leak monitoring.

Mitigating threats from malicious or unwanted extensions is an integral part of how Guardio protects its users, able to neutralize harmful extensions in real-time. Guardio, a new breed of cyber security product designed to tackle threats and security concerns within the browser, discovered a major flaw in Evernote’s Web Clipper Chrome extension’s code that left it vulnerable, potentially allowing threat actors to access personal information from users’ online services.

Evernote chrome app