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

Microsoft Azure Synapse Analytics Privilege Escalation

Critical

Synopsis

Tenable Research has discovered a privilege escalation vulnerability that allows a user to escalate privileges to that of the root user within a Spark VM in the Synapse Analytics environment. 

The flaws allowing this elevation of privilege exists in the "filesharemount.sh" script that users have access to in order to mount remote file shares in their Synapse environments. Users are able to replace the contents of this file with any arbitrary commands, which allow them to execute in the context of the root user for this environment.

For more details, please see our Tenable Techblog entry

Solution

Microsoft began patching this issue as early as April 30, 2022. At the time of this writing, the issue is considered fully resolved. No action is required by end users.

Disclosure Timeline

March 10, 2022 - Tenable discloses two issues to MSRC via researcher portal.
March 10, 2022 - MSRC sends automated acknowledgement.
March 18, 2022 - Tenable requests status update via researcher portal. No response from MSRC.
March 28, 2022 - Tenable requests status update via researcher portal. No response from MSRC.
April 4, 2022 - Tenable requests status update via researcher portal. No response from MSRC.
April 6, 2022 - MSRC requests issues be split into multiple tickets, but no status update is given. Tenable complies.
April 21, 2022 - Tenable requests status update via researcher portal. No response from MSRC.
April 25, 2022 - Tenable requests status update and reminds MSRC that the disclosure period is more than halfway through.
April 28, 2022 - Tenable requests status update via MSRC email due to lack of responses in researcher portal. MSRC does not respond.
May 2, 2022 - Tenable notices that issue has been silently patched. Tenable requests status update from MSRC via researcher portal. MSRC does not respond.
May 5, 2022 - Tenable requests status update via MSRC email due to lack of responses in researcher portal.
May 5, 2022 - Researcher reaches out to MSRC via Twitter (@MSFTSecurity).
May 5, 2022 - MSRC provides a status update stating that the fix is still being rolled out.
May 5, 2022 - MSRC confirms behavior reported.
May 11, 2022 - Tenable requests status update via email.
May 12, 2022 - MSRC requests phone call to bundle all Tenable discoveries and provide updates all at once despite all issues being unrelated and in separate tickets. Tenable declines request and states that written communication is preferred.
May 12, 2022 - MSRC provides status update on several issues (relevant update for this advisory states that the fix is still being rolled out).
May 18, 2022 - Tenable requests status update and states that all tested regions appear Fixed.
May 23, 2022 - MSRC states that this issue is bundled with another issue and they plan to close both cases together. Tenable reminds MSRC of their original request to separate split issues in the first place and requests status update.
May 31, 2022 - Tenable continues requesting status updates and additional information.
June 1, 2022 - Researcher reaches out to MSRC via Twitter due to lack of updates.
June 1, 2022 - MSRC states that although the issue is patched, they do not consider it a security related issue. MSRC requests phone call to discuss further.
June 2, 2022 - Tenable declines phone call request and states that written communication is preferred. Tenable refutes Microsoft’s claim that this issue was not security-related. Tenable declines phone call and requests communication be kept in writing.
June 2, 2022 - Researcher reaches out to MSRC via Twitter (DMs to @MSFTSecurity and @MSFTsecresponse) and obtains contact information for MSRC Community Manager. Tenable reaches out to this contact via email directly to request this case be escalated.
June 2, 2022 - MSRC rep requests further information. Tenable provides requested information.
June 3, 2022 - MSRC requests advance copy of security advisory and in a separate email provides another rebuttal.
June 6, 2022 - Tenable informs MSRC that case is considered closed due to MSRC's insistence this issue is not security-related.
June 6, 2022 - MSRC representatives contact Tenable and inform them that they believe it is indeed a security issue.
June 7, 2022 - Tenable and MSRC discuss varying opinions on severity.

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

Tenable Advisory ID: TRA-2022-20
Affected Products:
Azure Synapse Analytics Spark VM
Risk Factor:
Critical

Advisory Timeline

June 8, 2022 - Initial release.

Tenable Vulnerability Management

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 Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

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.

100 assets

Choose Your Subscription Option:

Buy Now

Tenable Vulnerability Management

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 Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

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.

100 assets

Choose Your Subscription Option:

Buy Now

Tenable Vulnerability Management

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 Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

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.

100 assets

Choose Your Subscription Option:

Buy Now

Try Tenable Web App Scanning

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable One Exposure Management 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 App Scanning trial also includes Tenable Vulnerability Management and Tenable Lumin.

Buy Tenable Web App 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 Lumin

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

Your Tenable Lumin trial also includes Tenable Vulnerability Management and Tenable Web App Scanning.

Buy Tenable Lumin

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

Try Tenable Nessus Professional Free

FREE FOR 7 DAYS

Tenable Nessus is the most comprehensive vulnerability scanner on the market today.

NEW - Tenable Nessus Expert
Now Available

Nessus Expert adds even more features, including external attack surface scanning, and the ability to add domains and scan cloud infrastructure. Click here to Try Nessus Expert.

Fill out the form below to continue with a Nessus Pro Trial.

Buy Tenable Nessus Professional

Tenable Nessus is the most comprehensive vulnerability scanner on the market today. Tenable 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

Try Tenable 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 Tenable Nessus Professional?
Upgrade to Nessus Expert free for 7 days.

Buy Tenable 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

Buy a multi-year license and save more.

Add Support and Training