Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home Alerts

Opera Browser MyFlaw Security Breach Warning

Opera Browser MyFlaw Security Breach Warning

January 16, 2024
Reading Time: 3 mins read
in Alerts

Cybersecurity researchers from Guardio Labs have revealed a now-patched security flaw in the Opera web browser for Microsoft Windows and Apple macOS, allowing for remote code execution. Codenamed MyFlaw, the vulnerability exploited the My Flow feature, enabling syncing of messages and files between mobile and desktop devices. By using a controlled browser extension, the flaw bypassed the browser’s sandbox and process, impacting both Opera and Opera GX browsers. The issue was responsibly disclosed on November 17, 2023, and subsequently addressed in updates released on November 22, 2023, highlighting the complexities of browser-based attacks and the need for internal design changes.

The MyFlaw vulnerability in Opera took advantage of the My Flow feature, which allows syncing messages and files between mobile and desktop devices. The flaw utilized a controlled browser extension to bypass the browser’s sandbox and process, creating a potential security risk. The flaw impacted both Opera and Opera GX browsers, prompting responsible disclosure on November 17, 2023, and subsequent updates on November 22, 2023, to address the vulnerability. My Flow, featuring a chat-like interface for exchanging notes and files, facilitated file execution outside the browser’s security boundaries, raising concerns about the security of browser extensions.

Guardio Labs, responsible for uncovering the MyFlaw vulnerability, discovered a “long-forgotten” version of the My Flow landing page, indicating a potential avenue for exploitation. This version, hosted on the domain “web.flow.opera.com,” lacked essential security measures, making it vulnerable to code injection. The attack chain involved crafting a specially designed extension masquerading as a mobile device to pair with the victim’s computer. The attacker then transmitted an encrypted malicious payload via a modified JavaScript file, prompting the user to click anywhere on the screen for subsequent execution. The findings underscore the need for internal design changes in browsers and improvements in Chromium’s infrastructure.

Opera responded promptly to close the security hole, implementing a fix on the server side to prevent similar issues in the future. The company emphasized its commitment to maintaining and improving product security, thanking Guardio Labs for their collaboration in uncovering and addressing the vulnerability. The incident highlights the ongoing challenges in ensuring browser security, with suggestions for changes in browser design and infrastructure to mitigate potential risks associated with extensions operating in sandboxed environments.

Reference:
  • “MyFlaw” — Cross Platform 0-Day RCE Vulnerability Discovered in Opera’s Browser
Tags: Cyber AlertCyber Alerts 2024Cyber RiskCyber threatDiscordJanuary 2024MacOSMyFlawOperaVulnerabilitiesWindows
ADVERTISEMENT

Related Posts

Windows Defender Flaw Enables Hijack

GPUGate Abuse of Google Ads and GitHub

September 9, 2025
Windows Defender Flaw Enables Hijack

Windows Defender Flaw Enables Hijack

September 9, 2025
Windows Defender Flaw Enables Hijack

Npm Packages Compromised In Attack

September 9, 2025
Atomic Stealer Masquerades As Cracked App

iCloud Calendar Used For Phishing Emails

September 9, 2025
Atomic Stealer Masquerades As Cracked App

Czech Cyber Agency Warns On Chinese Tech

September 9, 2025
Atomic Stealer Masquerades As Cracked App

Atomic Stealer Masquerades As Cracked App

September 9, 2025

Latest Alerts

Windows Defender Flaw Enables Hijack

Npm Packages Compromised In Attack

GPUGate Abuse of Google Ads and GitHub

iCloud Calendar Used For Phishing Emails

Czech Cyber Agency Warns On Chinese Tech

Atomic Stealer Masquerades As Cracked App

Subscribe to our newsletter

    Latest Incidents

    Hackers Steal Secrets In GitHub Attack

    Plex Users Told To Reset Passwords

    Lovesac Confirms Breach After Attack

    Azure Cloud Hit By Red Sea Cable Cuts

    Tenable Confirms Breach Of Customer Data

    US Probes Malicious Email On China Talks

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial