DuckDuckGo, the widely used web extension for Chrome and Firefox, that is meant to protect the privacy of its users has resolved a universal cross-site scripting (uXSS) flaw. DuckDuckGo Privacy Essentials, which blocks hidden trackers and offers private browsing features, was identified with the vulnerability. The research scientist Wladimir Palant has disclosed that it can allow arbitrary code to be executed on any domain on victims' devices. While the issue has been patched in Chrome, no updates for browsers like Microsoft Edge were published in Mozilla Firefox initially while it was disclosed.
First of all, for certain internal communication, the extension used unsecure communication chains which ironically caused a certain amount of data leakage through the domain borders. DuckDuckGo's second security vulnerability allowed the DuckDuckGo server to execute arbitrary JavaScripting code on a given domain, and a Cross-Site Scripting (XSS) vulnerability in this extension.
The security vulnerability could allow malicious actors to spy on all websites visited by the user, making confidential material such as banking and other data available. He says that even when browsing the website it leaves their privacy "completely compromised" and can even utilize web sites with defensive measures, like the security of information. Palant said that someone else controlling ‘http://staticcdn.duckduckgo.com’ can only use this vulnerability, which means that an attacker needs accessing the server.
“The data used to decide about spoofing the user agent is downloaded from staticcdn.duckduckgo.co,” Palant wrote. “So the good news [is]: the websites you visit cannot mess with it. The bad news: this data can be manipulated by DuckDuckGo, by Microsoft (hosting provider), or by anybody else who gains access t ..
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