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

New Cookie Sandwich Attack Steals Data

January 23, 2025
Reading Time: 2 mins read
in Alerts
Triplestrength Exploits Cloud Systems

A new cybersecurity threat has emerged, dubbed the “cookie sandwich” attack, which exploits vulnerabilities in web server cookie parsing to potentially expose sensitive data and hijack user sessions. This technique bypasses the HttpOnly flag, a security measure designed to prevent client-side scripts from accessing sensitive cookies, raising concerns among cybersecurity professionals. The attack hinges on exploiting legacy cookie parsing mechanisms and manipulating the structure of the

Cookie header to trick servers into revealing protected information.

The “cookie sandwich” attack leverages the fact that some browsers and servers still support older cookie specifications, allowing attackers to craft cookie values with special characters and quotes. By strategically placing these manipulated cookies within the Cookie header, attackers can create overlapping cookie boundaries. This causes vulnerable servers to misinterpret the cookie structure, treating the enclosed cookies as part of a single value. When the server reflects these manipulated cookies in its response, sensitive information like session IDs can be exposed to attackers.

Real-world examples demonstrate the potential impact of this vulnerability.

In one instance, a tracking domain with a reflected session parameter was successfully exploited using the “cookie sandwich” technique. By leveraging legacy cookie parsing in Apache Tomcat, the attacker was able to expose an HttpOnly protected PHPSESSID cookie. This vulnerability highlights the importance of robust cookie handling, response sanitization, and adherence to modern security practices.

To mitigate the risk of “cookie sandwich” attacks, organizations should prioritize several key measures. These include using modern parsing standards like RFC6265, disabling support for legacy cookie parsing, enabling HttpOnly and Secure flags on sensitive cookies, sanitizing user input and server responses, implementing Content Security Policies (CSP), and using the SameSite attribute to restrict cross-site cookie transmission. By adopting these strategies, organizations can strengthen their defenses and protect against this evolving threat.

Reference:
  • Critical Cookie Sandwich Attack Exploits HttpOnly Vulnerability to Steal Data
Tags: Cyber AlertsCyber Alerts 2025CyberattackCybersecurityJanuary 2025
ADVERTISEMENT

Related Posts

Sothebys Data Breach Exposes Customers

Microsoft Pulls 200 Suspicious Certificates

October 17, 2025
Sothebys Data Breach Exposes Customers

NK Hackers Hide Malware In Blockchain

October 17, 2025
Sothebys Data Breach Exposes Customers

Hackers Spread Malware With Blockchain

October 17, 2025

Fortinet And Ivanti Patch Severe Flaws

October 16, 2025

Malicious VSCode Extensions Steal Crypto

October 16, 2025

Fake Password Manager Hijack PCs

October 16, 2025

Latest Alerts

Microsoft Pulls 200 Suspicious Certificates

NK Hackers Hide Malware In Blockchain

Hackers Spread Malware With Blockchain

Fortinet And Ivanti Patch Severe Flaws

Malicious VSCode Extensions Steal Crypto

Fake Password Manager Hijack PCs

Subscribe to our newsletter

    Latest Incidents

    Pro Hamas Hackers Target Airport Speakers

    Prosper Breach Hits 17 Million Accounts

    Sothebys Data Breach Exposes Customers

    F5 Reports Hackers Stole Source Code

    YouTube Down Globally With Playback Errors

    Spanish Retailer Mango Discloses Breach

    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