Black Arrow Cyber Advisory 12 April 2023 – Microsoft Patch Tuesday, Adobe and SAP Updates Summary

Executive Summary

Microsoft’s April patch Tuesday addressed 97 security issues including one actively exploited zero-day actively being used to launch ransomware attacks. Adobe released updates to fix security issues across a range of their products including Acrobat and Adobe Reader. SAP have also this week issued fixes for a number of their products including BusinessObjects.

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 Microsoft

Microsoft’s April Patch Tuesday provides updates to address 97 security issues across its product range, including one actively exploited zero-day vulnerability (CVE-2023-28252) being used to launch ransomware attacks. The exploited zero-day vulnerability is a privilege escalation vulnerability which has been added the US Cybersecurity and Infrastructure Security Agency’s (CISA) “Known Exploited Vulnerabilities Catalog”. 7 critical vulnerabilities were also patched through updates provided by Microsoft.

What’s the risk to me or my business?

The actively exploited vulnerability could allow an attacker with access, to gain SYSTEM privileges and further compromise the confidentiality, integrity and availability of data stored by an organisation.

What can I do?

Security updates are available for all supported versions of Windows impacted. The updates should be applied as soon as possible for the actively exploited vulnerability and all other vulnerabilities that have a critical severity rating.

Technical Summary

CVE-2023-28252: The actively exploited vulnerability could allow an attacker to gain SYSTEM privileges, effectively providing the attacker with the highest permissions of access to a system. The vulnerability is a post exploitation vulnerability which an attacker can exploit once they have gained access to a vulnerable target.

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 Adobe

This month, Adobe released fixes for 56 vulnerabilities, of which 49 were rated critical across Adobe Acrobat and Reader (14), InCopy (1), Substance 3D Designer (9), Substance 3D Stager (10), Digital Editions (1) and Dimension (14). At current, Adobe is not aware of any of these vulnerabilities being actively exploited. The vulnerabilities include remote code execution, memory leak, privilege escalation and security bypass.

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SAP

Enterprise software vendor SAP has addressed vulnerabilities in several of its products, including two critical-severity vulnerabilities that impact SAP Diagnostic Agent and SAP BusinessObjects Business Intelligence Platform. The updates included fixes for 19 vulnerabilities. Including remote execution and authentication bypass. A total of 5 vulnerabilities were given the “Hot News” priority, which is the highest priority according to SAP.

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Further details on other specific updates within this patch Tuesday can be found here: https://www.ghacks.net/2023/04/11/microsoft-windows-security-updates-april-2023-what-you-need-to-know-before-installation/

Further details about CVE-2023-28252 can be found here: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-28252  

Further details of the vulnerabilities addressed in Adobe Acrobat and Reader can be found here: https://helpx.adobe.com/security/products/acrobat/apsb23-24.html

Further details of the vulnerabilities addressed in Adobe InCopy can be found here: https://helpx.adobe.com/security/products/incopy/apsb23-13.html

Further details of the vulnerabilities addressed in Adobe Substance 3D Designer can be found here: https://helpx.adobe.com/security/products/substance3d_designer/apsb23-28.html

Further details of the vulnerabilities addressed in Adobe Substance 3D Stager can be found here: https://helpx.adobe.com/security/products/substance3d_stager/apsb23-26.html

Further details of the vulnerabilities addressed in Adobe Digital Editions can be found here: https://helpx.adobe.com/security/products/Digital-Editions/apsb23-04.html

Further details of the vulnerabilities addressed in Adobe Dimension can be found here: https://helpx.adobe.com/security/products/dimension/apsb23-27.html

Further information on the patches by SAP can be found here: https://www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html

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