• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Allianz Life data breach exposed the data of most of its 1.4M customers

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55

 | 

Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

 | 

Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

 | 

Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

 | 

Unpatched flaw in EoL LG LNV5110R cameras lets hackers gain Admin access

 | 

Koske, a new AI-Generated Linux malware appears in the threat landscape

 | 

Mitel patches critical MiVoice MX-ONE Auth bypass flaw

 | 

Coyote malware is first-ever malware abusing Windows UI Automation

 | 

SonicWall fixed critical flaw in SMA 100 devices exploited in Overstep malware attacks

 | 

DSPM & AI Are Booming: $17.87B and $4.8T Markets by 2033

 | 

Stealth backdoor found in WordPress mu-Plugins folder

 | 

U.S. CISA adds CrushFTP, Google Chromium, and SysAid flaws to its Known Exploited Vulnerabilities catalog

 | 

U.S. CISA urges FCEB agencies to fix two Microsoft SharePoint flaws immediately and added them to its Known Exploited Vulnerabilities catalog

 | 

Sophos fixed two critical Sophos Firewall vulnerabilities

 | 

French Authorities confirm XSS.is admin arrested in Ukraine

 | 

Microsoft linked attacks on SharePoint flaws to China-nexus actors

 | 

Cisco confirms active exploitation of ISE and ISE-PIC flaws

 | 

SharePoint under fire: new ToolShell attacks target enterprises

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • Security
  • Microsoft fixed a flaw in Power Platform after being criticized

Microsoft fixed a flaw in Power Platform after being criticized

Pierluigi Paganini August 06, 2023

Microsoft announced it has addressed a critical flaw in its Power Platform after it was criticized for the delay in fixing the issue.

Microsoft this week addressed a critical vulnerability in its Power Platform, after it was criticized for the delay in acting to secure its platform.

On 30 March 2023, the vulnerability was reported to Microsoft by Tenable under Coordinated Vulnerability Disclosure (CVD).

The security issue impacts Power Platform Custom Connectors using Custom Code. The feature allows customers to write code for custom connectors.

Microsoft confirmed that an attacker can trigger the vulnerability to access Custom Code functions used for Power Platform custom connectors. The flaw can potentially lead to information disclosure if secrets or other sensitive information were embedded in the Custom Code function.

“The vulnerability could lead to unauthorized access to Custom Code functions used for Power Platform custom connectors. The potential impact could be unintended information disclosure if secrets or other sensitive information were embedded in the Custom Code function.” reads the advisory published by Microsoft. “Our investigation into the report identified anomalous access only by the security researcher that reported the incident, and no other actors. All impacted customers have been notified of this anomalous access by the researcher through the Microsoft 365 Admin Center (MC665159).”

The tech giant pointed out that it is not aware of active exploitation of the vulnerability in the wild.

Tenable reported that the exploitation of the flaw can enable limited, unauthorized access to cross-tenant applications and sensitive data (including but not limited to authentication secrets).

“The issue occurred as a result of insufficient access control to Azure Function hosts, which are launched as part of the creation and operation of custom connectors in Microsoft’s Power Platform (Power Apps, Power Automation).” states Tenable. “Certain connectors created for the Power Platform make use of custom C# code to connect and communicate with other services. That C# code is deployed as part of an Azure Function with an HTTP trigger. This Azure Function is deployed and managed by Microsoft, not as part of the customer’s environment.”

The experts explained that the issue can allow intercepting OAuth client IDs and secrets, as well as other forms of authentication, when interacting with the unsecured Azure Function hosts.

On July 6, 2023 Microsoft informed Tenable that the issue is fixed, but on July 10, 2023, Tenable informed Microsoft that the fix is incomplete.

On August 2, 2023, the IT giant implemented a fix for previously affected hosts.

Tenable CEO Amit Yoran accused Microsoft of being “grossly irresponsible, if not blatantly negligent” for the delay in addressing this flaw.

“What you hear from Microsoft is “just trust us,” but what you get back is very little transparency and a culture of toxic obfuscation. How can a CISO, board of directors or executive team believe that Microsoft will do the right thing given the fact patterns and current behaviors? Microsoft’s track record puts us all at risk. And it’s even worse than we thought.” added Yoran.

“Not all fixes are equal.  Some can be completed and safely applied very quickly, others can take longer.  In order to protect our customers from an exploit of an embargoed security vulnerability, we also start to monitor any reported security vulnerability of active exploitation and move swiftly if we see any active exploit. As both a service provider and a security company, Microsoft appreciates being part of an ecosystem of organizations focused on protecting customers as the highest priority over all other goals.” replied Microsoft.

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, Power Platform)


facebook linkedin twitter

you might also like

Pierluigi Paganini July 27, 2025
Allianz Life data breach exposed the data of most of its 1.4M customers
Read more
Pierluigi Paganini July 27, 2025
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Allianz Life data breach exposed the data of most of its 1.4M customers

    Data Breach / July 27, 2025

    SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55

    Malware / July 27, 2025

    Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION

    Breaking News / July 27, 2025

    Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

    Cyber Crime / July 26, 2025

    Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

    Intelligence / July 26, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT