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

4/29/2019
06:50 PM
Connect Directly
Twitter
LinkedIn
RSS
E-Mail
50%
50%

Docker Forces Password Reset for 190,000 Accounts After Breach

Organizations impacted by breach, which gave attackers illegal access to a database containing sensitive account information, need to check their container images.

The owners of some 190,000 Docker accounts will need to change their passwords and verify their container images haven't been tampered with as the result of a recent intrusion into a Docker Hub database.

Docker discovered the unauthorized access on April 25. It said it had already notified impacted users about the incident and sent them a password-reset link.

The company said it had also unlinked Docker Hub from GitHub and Bitbucket for those using these external repositories to automatically build — or autobuild — container images. Such users will need to relink their Docker Hub accounts to these repositories in order for autobuild to work properly.

Docker described the intrusion as something that gave attackers a "brief period" of illegal access to a database containing sensitive account information, including usernames and hashed passwords. Also exposed in the breach were tokens that some Docker Hub account owners used to access their repositories on GitHub and Bitbucket. It offered no details on when the breach might have occurred and how it was discovered.

Docker said the 190,000 accounts that had been impacted in the breach represented less than 5% of the overall number of users of its Hub cloud-based container image repository. "No Official Images have been compromised," the company said in a FAQ. Docker pointed to several additional security measures it has in place for protecting its Official Images, including GPG (GNU Privacy Guard) signatures and Notary signing for each image.

Docker Hub is a container image library that developers, software vendors, open source projects, and enterprise software teams use to store and share container images. Many organizations, including large enterprises, use images from the repository to build their containers.

Attacks on the developer pipeline can have a serious impact on application security, says Wei Lien Dang, vice president of product at container security vendor StackRox. "Tainted images can be difficult to detect, and the containers launched from them may even run as expected, except with a malicious process in the background," Lein says.

Since Docker has so far not provided a timeline for the incident, it is unclear how long the attackers might have had access to the compromised accounts, Wei says. To be safe, users need to go back and verify the integrity of any images they might have pushed out over the past several weeks.

Chris Wysopal, CTO of Veracode, says organizations that have been notified should be looking at their logs for signs of unauthorized access, especially if write access was performed. "In this instance, it is critical to review your GitHub logs if you integrated with DockerHub because you will have given DockerHub write access to your repos," he says.

In addition, importing production images to a private registry instead of pulling directly from a public registry can give enterprises more control and separation from events, such as the one involving Docker Hub, Wysopal says. "You can easily go and look at the timeline of the breach and see if you pulled an image during the period the public registry was compromised," he says.

Without any evidence of confirmed malicious tampering, the main takeaway from this breach for organizations is the need to include supply chain attacks in threat modeling exercises, says Tim Erlin, vice president of product management and strategy at Tripwire.

"Organizations that have considered this type of event in their response plan won't be panicking when an incident occurs," Erlin notes. "The key to incident response is to be prepared, and threat modeling allows an organization to identify and prepare for the most relevant threats."

Related Content:

 

 

 

Join Dark Reading LIVE for two cybersecurity summits at Interop 2019. Learn from the industry's most knowledgeable IT security experts. Check out the Interop agenda here.

Jai Vijayan is a seasoned technology reporter with over 20 years of experience in IT trade journalism. He was most recently a Senior Editor at Computerworld, where he covered information security and data privacy issues for the publication. Over the course of his 20-year ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
RyanSepe
50%
50%
RyanSepe,
User Rank: Ninja
4/29/2019 | 10:21:50 PM
And sent them a password-reset link....
The 'and sent them a password reset link....' sends the connotation that it was not a forced reset. Were the owners not allowed to log in unless they utilized this link or if they disregarded it could they still log in using their old passwords such as when a typical pw reset link is sent. 
COVID-19: Latest Security News & Commentary
Dark Reading Staff 9/25/2020
Hacking Yourself: Marie Moe and Pacemaker Security
Gary McGraw Ph.D., Co-founder Berryville Institute of Machine Learning,  9/21/2020
Startup Aims to Map and Track All the IT and Security Things
Kelly Jackson Higgins, Executive Editor at Dark Reading,  9/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Special Report: Computing's New Normal
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
How IT Security Organizations are Attacking the Cybersecurity Problem
How IT Security Organizations are Attacking the Cybersecurity Problem
The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-15208
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, when determining the common dimension size of two tensors, TFLite uses a `DCHECK` which is no-op outside of debug compilation modes. Since the function always returns the dimension of the first tensor, malicious attackers can ...
CVE-2020-15209
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr` buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one....
CVE-2020-15210
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, if a TFLite saved model uses the same tensor as both input and output of an operator, then, depending on the operator, we can observe a segmentation fault or just memory corruption. We have patched the issue in d58c96946b and ...
CVE-2020-15211
PUBLISHED: 2020-09-25
In TensorFlow Lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, saved models in the flatbuffer format use a double indexing scheme: a model has a set of subgraphs, each subgraph has a set of operators and each operator has a set of input/output tensors. The flatbuffer format uses indices f...
CVE-2020-15212
PUBLISHED: 2020-09-25
In TensorFlow Lite before versions 2.2.1 and 2.3.1, models using segment sum can trigger writes outside of bounds of heap allocated buffers by inserting negative elements in the segment ids tensor. Users having access to `segment_ids_data` can alter `output_index` and then write to outside of `outpu...