Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Attacks/Breaches

2/23/2017
11:15 AM
50%
50%

Google Researchers 'Shatter' SHA-1 Hash

'Collision' attack by researchers at CWI Institute and Google underscores need to retire SHA-1.

The aging cryptographic hash function SHA-1 (Secure Hash Algorithm 1) has suffered what some experts consider its final blow today as researchers from Google and the CWI Institute revealed that they had found a practical way to break SHA-1.

SHA-1 long has been considered obsolete, and most major browser vendors plan to halt accepting SHA-1 based certificates this year due to its relatively weaker crypto scheme than the newer SHA-2 and SHA-3 standards. 

Google and CWI engineered a collision attack against SHA-1, demonstrating two PDF files with the same SHA-1 hash and different content as a proof-of-concept of their findings.

"For the tech community, our findings emphasize the necessity of sunsetting SHA-1 usage. Google has advocated the deprecation of SHA-1 for many years, particularly when it comes to signing TLS certificates. As early as 2014, the Chrome team announced that they would gradually phase out using SHA-1. We hope our practical attack on SHA-1 will cement that the protocol should no longer be considered secure," Google said in a blog post today. "We hope that our practical attack against SHA-1 will finally convince the industry that it is urgent to move to safer alternatives such as SHA-256."

See Google's post here for more details on the PoC.

 

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
Commentary
How SolarWinds Busted Up Our Assumptions About Code Signing
Dr. Jethro Beekman, Technical Director,  3/3/2021
News
'ObliqueRAT' Now Hides Behind Images on Compromised Websites
Jai Vijayan, Contributing Writer,  3/2/2021
News
Attackers Turn Struggling Software Projects Into Trojan Horses
Robert Lemos, Contributing Writer,  2/26/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: Sure you have fire, but he has an i7!
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-25344
PUBLISHED: 2021-03-04
Missing permission check in knox_custom service prior to SMR Mar-2021 Release 1 allows attackers to gain access to device's serial number without permission.
CVE-2021-25345
PUBLISHED: 2021-03-04
Graphic format mismatch while converting video format in hwcomposer prior to SMR Mar-2021 Release 1 results in kernel panic due to unsupported format.
CVE-2021-25346
PUBLISHED: 2021-03-04
A possible arbitrary memory overwrite vulnerabilities in quram library version prior to SMR Jan-2021 Release 1 allow arbitrary code execution.
CVE-2021-25347
PUBLISHED: 2021-03-04
Hijacking vulnerability in Samsung Email application version prior to SMR Feb-2021 Release 1 allows attackers to intercept when the provider is executed.
CVE-2021-25348
PUBLISHED: 2021-03-04
Improper permission grant check in Samsung Internet prior to version 13.0.1.60 allows access to files in internal storage without authorized STORAGE permission.