Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

Tenable Blog

Subscribe

Microsoft Azure Synapse Pwnalytics

Since March 10, Tenable Research has attempted to work with Microsoft to address two serious flaws in the underlying infrastructure of Microsoft's Azure Synapse Analytics

Since March 10, Tenable Research has attempted to work with Microsoft to address two serious flaws in the underlying infrastructure of Azure Synapse Analytics.

Synapse Analytics is a platform used for machine learning, data aggregation and other computational work. The service is currently listed under the high-impact scenarios in Microsoft’s Azure Bug Bounty program. Microsoft states that products and scenarios listed under that heading have “the highest potential impact to customer security.”

Tenable Research has discovered two serious flaws in the underlying infrastructure that this service runs on. These flaws allow a user to escalate privileges to that of the root user within the underlying Apache Spark virtual machines, or to poison the hosts file of all nodes in an Apache Spark pool. The keys, secrets and services accessible via these vulnerabilities have traditionally allowed further lateral movement and compromise of Microsoft-owned infrastructure, which could potentially lead to a compromise of other customers’ data as we’ve seen in several other cases recently, such as Wiz’s ChaosDB and Orca’s SynLapse. Microsoft has made the claim, however, that cross-tenant access is not possible via these attack vectors.

Tenable reported these issues to Microsoft on March 10, 2022. Microsoft began rolling out a fix for the privilege escalation issue as early as April 30, 2022. At this time, Tenable believes that the fix has been successfully rolled out to all regions. No action is needed from end users in order to ensure their environments are no longer affected. The hosts file poisoning attack remains unpatched at the time of this writing. Due to the nature of these vulnerabilities and the disclosure process, we do not have CVE reference numbers for them.

See our post on the Tenable TechBlog for more detailed information regarding our interactions with Microsoft and the technical details of these flaws.

During the disclosure process, Microsoft representatives initially seemed to agree that these were critical issues. Microsoft developed and implemented a patch for the privilege escalation without further information from Tenable Research. During the final days of the disclosure process, Microsoft Security Response Center (MSRC) began attempting to downplay the severity of the privilege escalation issue and classified it as a “best practice recommendation,” rather than a security issue. Despite clear evidence to the contrary, MSRC declined a bounty or acknowledgement for this finding. After being notified of our intent to publish information about the vulnerabilities, Microsoft representatives reversed the prior decision, classifying these issues as security-related, demonstrating a clear lack of communication among the teams involved within Microsoft.

These flaws and our researchers’ interactions with Microsoft demonstrate the difficulties involved in addressing security-related issues in cloud environments. The entire process is largely out of customer control. Customers are entirely beholden to the cloud providers to fix reported issues. The good news, though, is that once an issue is fixed, it’s fixed. Customers generally don’t have any actions to take since everything happens behind the scenes. The bad news, however, is that the cloud providers rarely give notice that a security-related flaw was ever present in the first place.

For more detailed information regarding our interactions with Microsoft and the technical details of these flaws, please see our post on the Tenable TechBlog.

Get more information

Related Articles

Are You Vulnerable to the Latest Exploits?

Enter your email to receive the latest cyber exposure alerts in your inbox.

tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy.

Your Tenable.io Vulnerability Management trial also includes Tenable Lumin, Tenable.io Web Application Scanning and Tenable.cs Cloud Security.

tenable.io BUY

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

Choose Your Subscription Option:

Buy Now

Try Nessus Professional Free

FREE FOR 7 DAYS

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy Nessus Professional

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy a multi-year license and save. Add Advanced Support for access to phone, community and chat support 24 hours a day, 365 days a year.

Select Your License

Buy a multi-year license and save.

Add Support and Training

Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy.

Your Tenable.io Vulnerability Management trial also includes Tenable Lumin, Tenable.io Web Application Scanning and Tenable.cs Cloud Security.

Tenable.io BUY

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

Choose Your Subscription Option:

Buy Now

Try Tenable.io Web Application Scanning

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable.io platform. Safely scan your entire online portfolio for vulnerabilities with a high degree of accuracy without heavy manual effort or disruption to critical web applications. Sign up now.

Your Tenable Web Application Scanning trial also includes Tenable.io Vulnerability Management, Tenable Lumin and Tenable.cs Cloud Security.

Buy Tenable.io Web Application Scanning

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

5 FQDNs

$3,578

Buy Now

Try Tenable.io Container Security

Enjoy full access to the only container security offering integrated into a vulnerability management platform. Monitor container images for vulnerabilities, malware and policy violations. Integrate with continuous integration and continuous deployment (CI/CD) systems to support DevOps practices, strengthen security and support enterprise policy compliance.

Buy Tenable.io Container Security

Tenable.io Container Security seamlessly and securely enables DevOps processes by providing visibility into the security of container images – including vulnerabilities, malware and policy violations – through integration with the build process.

Try Tenable Lumin

Visualize and explore your Cyber Exposure, track risk reduction over time and benchmark against your peers with Tenable Lumin.

Your Tenable Lumin trial also includes Tenable.io Vulnerability Management, Tenable.io Web Application Scanning and Tenable.cs Cloud Security.

Buy Tenable Lumin

Contact a Sales Representative to see how Lumin can help you gain insight across your entire organization and manage cyber risk.

Try Tenable.cs

Enjoy full access to detect and fix cloud infrastructure misconfigurations and view runtime vulnerabilities. Sign up for your free trial now.

Your Tenable.cs Cloud Security trial also includes Tenable.io Vulnerability Management, Tenable Lumin and Tenable.io Web Application Scanning.

Contact a Sales Rep to Buy Tenable.cs

Contact a Sales Representative to learn more about Tenable.cs Cloud Security and see how easy it is to onboard your cloud accounts and get visibility into both cloud misconfigurations and vulnerabilities within minutes.

Try Nessus Expert Free

FREE FOR 7 DAYS

Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Already have Nessus Professional?
Upgrade to Nessus Expert free for 7 days.

Buy Nessus Expert

Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Select Your License

Promotional pricing extended until December 31st.
Buy a multi-year license and save more.

Add Support and Training