CVE-2021-34364

The CVE-2021-34364 entry concerns Refined GitHub browser extension prior to version 21.6.8, where a cross-site scripting (XSS) vulnerability can be triggered by a link in a document. The affected software is the Refined GitHub browser extension, with the vulnerability described as XSS via a link ...

CVE-2021-34364

The Refined GitHub browser extension before 21.6.8 might allow XSS via a link in a document. NOTE: github.com sends Content-Security-Policy headers to, in general, address XSS and other concerns...

Brave Software: DNS Leaks when using any VPN Browser extension with Brave Shield enabled

If Brave Shield is enabled alongside with a VPN Chrome extension and adblocking is enabled, some DNS requests may not be forwarded through the VPN tunnel...

PT-2021-3046 · Microsoft · Accessibility Insights For Web

Name of the Vulnerable Software and Affected Versions: Microsoft Accessibility Insights for Web affected versions not specified Description: The issue is related to a lack of protection for service data in the Microsoft Accessibility Insights for Web browser extension. Exploitation of this issue...

Hack-Tools

This is an offensive tool for Web Pentesters. It is a browser extension called HackTools, which facilitates web application penetration tests. The extension includes cheat sheets and tools such as XSS payloads, reverse shells, and more, accessible in one click. It can be used in pop-up mode or in...

CVE-2021-23986

A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have...

Can a browser extension be cursed?

Privacy Can a browser extension be cursed? Share December 4th, 2020 Mallory tries to create a browser extension that will let him spy on Alice. TL;DR: skip to the conclusions to see what Alice learned. The Privacy Problem Mallory was quite tired of his failed attempts to melt Alice’s heart. She...

Google Mending Another Crack in Widevine

For the second time in as many years, Google is working to fix a weakness in its Widevine digital rights management DRM technology used by online streaming sites like Disney, Hulu and Netflix to prevent their content from being pirated. The latest cracks in Widevine concern the encryption...

A week in security (April 13 – 19)

Last week on Malwarebytes Labs, we looked at how to avoid Zoom bombing, weighed the risks of surveillance versus pandemics, and dug into a spot of WiFi credential theft. Other cybersecurity news: Malware creeps back into the home: With a pandemic forcing much of the workforce into remote position...

Privacy Badger - A Browser Extension That Automatically Learns To Block Invisible Trackers

Privacy Badger is a browser extension that automatically learns to block invisible trackers. Instead of keeping lists of what to block, Privacy Badger learns by watching which domains appear to be tracking you as you browse the Web. Privacy Badger sends the Do Not Track signal with your browsing...

HTTPS Everywhere - A Browser Extension That Encrypts Your Communications With Many Websites That Offer HTTPS But Still Allow Unencrypted Connections

A browser extension that encrypts your communications with many websites that offer HTTPS but still allow unencrypted connections. Getting Started Get the packages you need and install a git hook to run tests before push: bash install-dev-dependencies.sh Run the ruleset validations and browser...

CVE-2019-18893

XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and AVG Secure Browser 77.0.1790.77 allows websites to execute their code in the context of this component. While Video Downloader is technically a browser extension, it is granted a very wide set of privileges...

Cross site scripting

XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and AVG Secure Browser 77.0.1790.77 allows websites to execute their code in the context of this component. While Video Downloader is technically a browser extension, it is granted a very wide set of privileges...

Design/Logic Flaw

In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently...

CVE-2019-18893

XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and AVG Secure Browser 77.0.1790.77 allows websites to execute their code in the context of this component. While Video Downloader is technically a browser extension, it is granted a very wide set of privileges...

Amazon Takes a Swipe at PayPal's $4 Billion Acquisition

The retail giant warned holiday shoppers that Honey, a popular browser extension, was a “security risk.” Honey denies the claim...

Obfuscation as a Privacy Tool

This essay discusses the futility of opting out of surveillance, and suggests data obfuscation as an alternative. We can apply obfuscation in our own lives by using practices and technologies that make use of it, including: The secure browser Tor, which among other anti-surveillance technologies...

The vulnerability of the JSON Viewer browser extension, which allows attackers to perform cross-site scripting attacks.

The vulnerability of the JSON Viewer browser extension arises from errors in file processing. Exploiting this vulnerability allows a malicious actor to perform cross-site scripting attacks remotely...

Google Adds Password Checkup Feature to Chrome Browser

Google will soon alert Chrome browser users of weak or compromised passwords. The checks will be in real time as Chrome users visit a password protected website. Bad passwords will trigger a red dialogue box alerting users to take action to better protect their account. The move integrates a...

Malicious Ad Blockers for Chrome Caught in Ad Fraud Scheme

Google has removed two malicious ad blockers from its Chrome Web Store after a researcher discovered they were carrying out ad fraud and deceived Chrome users by using names of legitimate and popular blockers. Researcher Andrey Meshkov from rival ad blocker maker AdGuard discovered that the...