Trustwave Unveils New Offerings to Maximize Value of Microsoft Security Investments. Learn More

Trustwave Unveils New Offerings to Maximize Value of Microsoft Security Investments. Learn More

Managed Detection & Response

Eliminate active threats with 24/7 threat detection, investigation, and response.

Co-Managed SOC (SIEM)

Maximize your SIEM investment, stop alert fatigue, and enhance your team with hybrid security operations support.

Advisory & Diagnostics

Advance your cybersecurity program and get expert guidance where you need it most.

Penetration Testing

Test your physical locations and IT infrastructure to shore up weaknesses before exploitation.

Database Security

Prevent unauthorized access and exceed compliance requirements.

Email Security

Stop email threats others miss and secure your organization against the #1 ransomware attack vector.

Digital Forensics & Incident Response

Prepare for the inevitable with 24/7 global breach response in-region and available on-site.

Firewall & Technology Management

Mitigate risk of a cyberattack with 24/7 incident and health monitoring and the latest threat intelligence.

Offensive Security
Solutions to maximize your security ROI
Microsoft Exchange Server Attacks
Stay protected against emerging threats
Rapidly Secure New Environments
Security for rapid response situations
Securing the Cloud
Safely navigate and stay protected
Securing the IoT Landscape
Test, monitor and secure network objects
Why Trustwave
About Us
Awards and Accolades
Trustwave SpiderLabs Team
Trustwave Fusion Security Operations Platform
Trustwave Security Colony
Technology Alliance Partners
Key alliances who align and support our ecosystem of security offerings
Trustwave PartnerOne Program
Join forces with Trustwave to protect against the most advance cybersecurity threats
SpiderLabs Blog

Vino VNC Server Remote Persistent DoS Vulnerability

Last week, I was making some performance enhancements to theVNC protocol implementations in the TrustKeeper Scanning Engine. Unfortunately, in my mission to "Go Fast!", Imanaged to trigger a Denial of Service (DoS) vulnerability in Vino. Vino is the VNC server for the GNOME desktopenvironment and also happens be to the default VNC server for popular Linuxdistributions like Ubuntu.

Shortly after finding the vulnerability, we reached out to theGNOME project and the security team there was nothing short of awesome for us to workwith. They patched the vulnerability thesame day (link)and they notified the major Linux distributions with a fix the day after (link).

The vulnerability should be fixed in Vino 3.9.92 (and 3.8.2if there is a future release in the 3.8 branch). At the time of this writing, it doesn'tappear that the patch has made it's way down to the Ubuntu distribution justyet, but I hope it will be there and in other distributions very soon.

If you want more details about the vulnerability, including PoC code, please see our detailed advisory.

***UPDATE – October 2, 2013***

Ubuntu released USN-1980 to address this vulnerability on September 30th, 2013.



Latest SpiderLabs Blogs

Fare Thee Well ModSecurity: End-of-Life and Last Commercial Rules Update for June 2024

A Fourteen-Year Journey Comes to an End In June 2010, Trustwave acquired Breach Security, which brought with it the popular Open-Source Web Application Firewall ModSecurity for Apache. At that time,...

Read More

Secure Access Service Edge: Another Multi-Tool for the SOC

Over the years, several security defense architectures have merged into a single solution. Endpoint detection tools can perform sophisticated detections and correlations that used to require a...

Read More

Search & Spoof: Abuse of Windows Search to Redirect to Malware

Trustwave SpiderLabs has detected a sophisticated malware campaign that leverages the Windows search functionality embedded in HTML code to deploy malware. We found the threat actors utilizing a...

Read More