Wednesday, June 19, 2024

PortSmash – A New Side Channel Vulnerability in SMT/Hyper-Threading That Allows Attackers To Steal Sensitive Data

Researchers discovered a new critical side-channel vulnerability dubbed PortSmash that can allow attackers to steal from other simultaneous process running in the same CPU core with that has SMT/Hyper-Threading enabled.

The Simultaneous multithreading process is to improve the overall efficiency and reduces tile by carrying out a number of parallel computing tasks.

The vulnerability named PortSmash CVE-2018-5407 discovered by a group of researchers Billy Bob Brumley, Cesar Pereida Garcia, Sohaib ul Hassan, Nicola
Tuveri from Tampere University of Technology, Finland and
Alejandro Cabrera Aldaya from Universidad Tecnologica de la Habana CUJAE, Cuba.

Researchers tested and confirmed vulnerability with Skylake and Kaby Lake processers, they are able to recover the elliptic curve private key from an OpenSSL-powered TLS server.

We able to detect a port carry out timing side-channel attack to exfiltrate a private key from processes running in parallel on the same CPU core. To exploit the vulnerability root permission is not required, researchers said.

Billy Brumley said, “Our attack has nothing to do with the memory subsystem or caching, the nature of the leakage is due to execution engine sharing on SMT (e.g. Hyper-Threading) architectures.”

Researchers also published proof-of-concept (PoC) on Github that targets the OpenSSL, the library addressed the flaw in OpenSSL 1.1.0h or lower. the exploit code was written in x64 assembly that runs locally on a vulnerable machine.

“We steal an OpenSSL (<= 1.1.0h) P-384 private key from a TLS server using this new side-channel vector. It is a local attack in the sense that the malicious process must be running on the same physical core as the victim,” reads Security Advisory.

Affected Software/hardware

SMT/Hyper-Threading architectures Skylake and Kaby Lake verified by researchers and they expect to work with AMD Ryzen.

OpenSSL – 1.1.0h & Ubuntu 18.04 affected with the vulnerability.

Fix for PortSmash

To fix the vulnerability researchers suggested upgrading with the OpenSSL 1.1.1 or 1.1.0i to fix the issue.

Related Read

New Method to Establish Covert Channel Communication by Abusing X.509 Digital Certificates

NetSpectre – New Spectre Remote Attack over Network Affected Billions of Devices

Website

Latest articles

Singapore Police Arrested Two Individuals Involved in Hacking Android Devices

The Singapore Police Force (SPF) has arrested two men, aged 26 and 47, for...

CISA Conducts First-Ever Tabletop Exercise Focused on AI Cyber Incident Response

On June 13, 2024, the Cybersecurity and Infrastructure Security Agency (CISA) made history by...

Europol Taken Down 13 Websites Linked to Terrorist Operations

Europol and law enforcement agencies from ten countries have taken down 13 websites linked...

New ARM ‘TIKTAG’ Attack Impacts Google Chrome, Linux Systems

Memory corruption lets attackers hijack control flow, execute code, elevate privileges, and leak data.ARM's...

Operation Celestial Force Employing Android And Windows Malware To Attack Indian Users

A Pakistani threat actor group, Cosmic Leopard, has been conducting a multi-year cyber espionage...

Hunt3r Kill3rs Group claims they Infiltrated Schneider Electric Systems in Germany

The notorious cybercriminal group Hunt3r Kill3rs has claimed responsibility for infiltrating Schneider Electric's systems...

Hackers Employing New Techniques To Attack Docker API

Attackers behind Spinning YARN launched a new cryptojacking campaign targeting publicly exposed Docker Engine...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Free Webinar

API Vulnerability Scanning

71% of the internet traffic comes from APIs so APIs have become soft targets for hackers.Securing APIs is a simple workflow provided you find API specific vulnerabilities and protect them.In the upcoming webinar, join Vivek Gopalan, VP of Products at Indusface as he takes you through the fundamentals of API vulnerability scanning..
Key takeaways include:

  • Scan API endpoints for OWASP API Top 10 vulnerabilities
  • Perform API penetration testing for business logic vulnerabilities
  • Prioritize the most critical vulnerabilities with AcuRisQ
  • Workflow automation for this entire process

Related Articles