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TLP:CLEAR
MS-ISAC CYBERSECURITY ADVISORY
MS-ISAC ADVISORY NUMBER:
2023-004
DATE(S) ISSUED:
01/10/2023
SUBJECT:
Multiple Vulnerabilities in Adobe Products Could Allow for Arbitrary Code Execution
OVERVIEW:
Multiple vulnerabilities have been discovered in Adobe products, the most severe of which could allow for arbitrary code execution. Adobe Acrobat and Reader are used to view, create, print, and manage PDF files. Adobe InDesign is a desktop publishing and page layout designing software application that can be used to create works such as posters, flyers, brochures, magazines, newspapers, presentations, books and eBooks. Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
THREAT INTELLIGENCE:
There are currently no reports of these vulnerabilities being exploited in the wild.
- Adobe Acrobat DC, Continuous, 22.003.20282 (Win), 22.003.20281 (Mac) and earlier versions
- Acrobat Reader DC, Continuous, 22.003.20282 (Win), 22.003.20281 (Mac) and earlier versions
- Acrobat 2020, Classic 2020, 20.005.30418 and earlier versions
- Acrobat Reader 2020, Classic 2020, 20.005.30418 and earlier versions
- Adobe InDesign ID17.4, ID18.0 and earlier versions
- Large and medium government entities: High
- Small government entities: Medium
- Large and medium business entities: High
- Small business entities: Medium
Home users: Low
TECHNICAL SUMMARY:
Multiple vulnerabilities have been discovered in Adobe Products, the most severe of which could allow for arbitrary code execution. Details of these vulnerabilities are as follows
Tactic: Execution (TA0002):
Technique: Exploitation for Client Execution (T1203):
Adobe Acrobat:
- Integer Overflow or Wraparound which could result in Arbitrary code execution (CVE-2023-21579)
- Out-of-bounds Read which could result in Memory Leak (CVE-2023-21581, CVE-2023-21585, CVE-2023-21613, CVE-2023-21614)
- NULL Pointer Dereference which could result in Application denial-of-service (CVE-2023-21586)
- Stack-based Buffer Overflow which could result in Arbitrary code execution (CVE-2023-21604, CVE-2023-21610)
- Heap-based Buffer Overflow which could result in Arbitrary code execution (CVE-2023-21605)
- Out-of-bounds Write which could result in Arbitrary code execution (CVE-2023-21606, CVE-2023-21609)
- Improper Input Validation which could result in Arbitrary code execution (CVE-2023-21607)
- Use After Free which could result in Arbitrary code execution (CVE-2023-21608)
- Violation of Secure Design Principles which could result in Privilege escalation (CVE-2023-21611, CVE-2023-21612)
Adobe InDesign:
- Heap-based Buffer Overflow which could result in Arbitrary code execution (CVE-2023-21587)
- Improper Input Validation which could result in Arbitrary code execution (CVE-2023-21588)
- Out-of-bounds Write which could result in Arbitrary code execution (CVE-2023-21589, CVE-2023-21590)
- Out-of-bounds Read which could result in Memory Leak (CVE-2023-21591, CVE-2023-21592)
Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
RECOMMENDATIONS:
We recommend the following actions be taken:
- Apply the stable channel update provided by Adobe to vulnerable systems immediately after appropriate testing. (M1051: Update Software)
- Safeguard 7.1 : Establish and Maintain a Vulnerability Management Process: Establish and maintain a documented vulnerability management process for enterprise assets. Review and update documentation annually, or when significant enterprise changes occur that could impact this Safeguard.
- Safeguard 7.4: Perform Automated Application Patch Management: Perform application updates on enterprise assets through automated patch management on a monthly, or more frequent, basis.
- Safeguard 7.5 : Perform Automated Vulnerability Scans of Internal Enterprise Assets: Perform automated vulnerability scans of internal enterprise assets on a quarterly, or more frequent, basis. Conduct both authenticated and unauthenticated scans, using a SCAP-compliant vulnerability scanning tool.
- Apply the Principle of Least Privilege to all systems and services. Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack. (M1026: Privileged Account Management)
- Safeguard 4.7: Manage Default Accounts on Enterprise Assets and Software: Manage default accounts on enterprise assets and software, such as root, administrator, and other pre-configured vendor accounts. Example implementations can include: disabling default accounts or making them unusable.
- Safeguard 5.4: Restrict Administrator Privileges to Dedicated Administrator Accounts: Restrict administrator privileges to dedicated administrator accounts on enterprise assets. Conduct general computing activities, such as internet browsing, email, and productivity suite use, from the user’s primary, non-privileged account.
- Use capabilities to detect and block conditions that may lead to or be indicative of a software exploit occurring. (M1050: Exploit Protection)
- Safeguard 10.5: Enable Anti-Exploitation Features: Enable anti-exploitation features on enterprise assets and software, where possible, such as Microsoft® Data Execution Prevention (DEP), Windows® Defender Exploit Guard (WDEG), or Apple® System Integrity Protection (SIP) and Gatekeeper™.
- Restrict use of certain websites, block downloads/attachments, block Javascript, restrict browser extensions, etc. (M1021: Restrict Web-Based Content)
- Safeguard 9.2: Use DNS Filtering Services: Use DNS filtering services on all enterprise assets to block access to known malicious domains.
- Safeguard 9.3: Maintain and Enforce Network-Based URL Filters: Enforce and update network-based URL filters to limit an enterprise asset from connecting to potentially malicious or unapproved websites. Example implementations include category-based filtering, reputation-based filtering, or through the use of block lists. Enforce filters for all enterprise assets.
- Safeguard 9.6: Block Unnecessary File Types: Block unnecessary file types attempting to enter the enterprise’s email gateway.
- Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources. Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources. (M1017: User Training)
- Safeguard 14.1: Establish and Maintain a Security Awareness Program: Establish and maintain a security awareness program. The purpose of a security awareness program is to educate the enterprise’s workforce on how to interact with enterprise assets and data in a secure manner. Conduct training at hire and, at a minimum, annually. Review and update content annually, or when significant enterprise changes occur that could impact this Safeguard.
- Safeguard 14.2: Train Workforce Members to Recognize Social Engineering Attacks: Train workforce members to recognize social engineering attacks, such as phishing, pre-texting, and tailgating.
Adobe:
https://helpx.adobe.com/security.html
https://helpx.adobe.com/security/products/acrobat/apsb23-01.html
https://helpx.adobe.com/security/products/indesign/apsb23-07.html
CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21579
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21581
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21585
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21586
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21587
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21588
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21589
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21590
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21591
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21592
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21604
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21605
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21606
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21607
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21608
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21609
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21610
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21611
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21612
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21613
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21614
Multi-State Information Sharing and Analysis Center (MS-ISAC)
Elections Infrastructure Information Sharing and Analysis Center (EI-ISAC)
31 Tech Valley Drive
East Greenbush, NY 12061
24×7 Security Operations Center
SOC@cisecurity.org – 1-866-787-4722
TLP:CLEAR
www.cisa.gov/tlp
Information may be distributed without restriction, subject to standard copyright rules.
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