Hackers Recover Private RSA Keys Used in Billions of Devices


Nordnet Baritof
Nordnet Baritof
  • Technical Writer
  • Entrepreneur
  • Founder and CEO
  • Developer
  • Blogger and IT Analyst
2017-10-17 13:53:59

| Share
| Share
| Share
Hackers Recover Private RSA Keys Used in Billions of Devices

If you think KRACK attack for WiFi is the worst vulnerability of this year, then hold on…

...we have got another one for you which is even worse.

Microsoft, Google, Lenovo, HP and Fujitsu are warning their customers of a potentially serious vulnerability in widely used RSA cryptographic library produced by German semiconductor manufacturer Infineon Technologies.

It's noteworthy that this crypto-related vulnerability (CVE-2017-15361) doesn't affect elliptic-curve cryptography and the encryption standard itself, rather it resides in the implementation of RSA key pair generation by Infineon's Trusted Platform Module (TPM).

Infineon's Trusted Platform Module (TPM) is a widely-used, dedicated microcontroller designed to secure hardware by integrating cryptographic keys into devices and is used for secured crypto processes.

This 5-year-old algorithmic vulnerability was discovered by security researchers at Masaryk University in the Czech Republic, who have released a blog post with more details about the weakness as well as an online tool to test if RSA keys are vulnerable to this dangerous flaw.
 

ROCA: Factorization Attack to Recover Private RSA Keys


Dubbed ROCA (Return of Coppersmith's Attack), the factorization attack introduced by the researchers could potentially allow a remote attacker to reverse-calculate a private encryption key just by having a target's public key—thanks to this bug.

"Only the knowledge of a public key is necessary and no physical access to the vulnerable device is required," the researchers said. "The vulnerability does NOT depend on a weak or a faulty random number generator—all RSA keys generated by a vulnerable chip are impacted."

This could eventually allow the attacker to impersonate key owner, decrypt victim's sensitive data, inject malicious code into digitally signed software, and bypass protections that prevent accessing or tampering with the targeted computer.
 

ROCA Attack Exposes Billions of Devices to Attack

ROCA Attack Exposes Billions of Devices to Attack
Majority of Windows and Google Chromebook devices developed by HP, Lenovo and Fujitsu are amongst those affected by the ROCA attack.
"We found and analyzed vulnerable keys in various domains including electronic citizen documents, authentication tokens, trusted boot devices, software package signing, TLS/HTTPS keys and PGP," the researchers said. 
"The currently confirmed number of vulnerable keys found is about 760,000 but possibly up to two to three magnitudes more are vulnerable."
 

More Details, Testing Tool, and Patches


The security researchers have released a brief blog post about the flaw, which includes a number of tools for detection, mitigation and workarounds.

The vulnerability was discovered and reported to Infineon Technologies in February this year and the researchers will present their full findings, including the factorization method, on November 2nd at the ACM Conference on Computer and Communications Security.

Their research paper, titled "The Return of Coppersmith's Attack: Practical Factorization of Widely Used RSA Moduli" (ROCA), will also be released after their presentation.

So, companies and organisations have enough time to change affected encryption keys before the details of how this vulnerability works and could be exploited are released.

Major vendors including InfineonMicrosoftGoogleHPLenovo, and Fujitsu have already released the software updates for their relevant hardware and software as well as guidelines for a mitigation of this vulnerability.
"Some Windows security features and potentially third-party software rely on keys generated by the TPM (if available on the system)," according to a Microsoft advisory. "Microsoft is releasing Windows security updates to help work around the vulnerability by logging events and by allowing the generation of software based keys."
2017 : Extra Celebrity Nude Photos Hacked and Leaked Online
2017 : Extra Celebrity Nude Photos Hacked and Leaked Online
.
Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked

Out of those 30 million accounts, hackers successfully accessed personal information from 29 million Facebook users, though the company assured that t


Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
Google following your every move here is how to limit it

As it turns out, even when you opt to limit Google's ability to track your location when using its search function or apps, some of your time-stam


Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
HOW! Lets Users Modify Group Chats in Whatsapp to Spread Fake News with WhatsApp Flaw

WhatsApp, the most popular messaging application in the world, has been found vulnerable to multiple security vulnerabilities that could allow malicio


Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
Alert ! Godaddy Web hosting server hack

Besides Timehop, another data breach was discovered last week that affects users of one of the largest web hosting companies in Germany, DomainFa


Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
Stolen D-Link digital certificate malware

Digitally signed malware has become much more common in recent years to mask malicious intentions. Security researchers have discovered a new ma


Check If Your Accounts One of 30 Million Facebook Accounts Were Hacked
Google Blocks All Chrome Extension Installations From 3rd-Party

You probably have come across many websites that let you install browser extensions without ever going to the official Chrome web store. It's a g



© 2013-2019 best of geeks. All rights reserved.