CVE-2020-9730 in InDesign
Summary
by MITRE
A memory corruption vulnerability exists in InDesign 15.1.1 (and earlier versions). Insecure handling of a malicious indd file could be abused to cause an out-of-bounds memory access, potentially resulting in code execution in the context of the current user.
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Analysis
by VulDB Data Team • 05/05/2025
The vulnerability identified as CVE-2020-9730 represents a critical memory corruption flaw within Adobe InDesign software version 15.1.1 and earlier iterations. This issue stems from inadequate input validation and memory management practices when processing maliciously crafted indesign files. The flaw manifests during the parsing of indd file formats which are used by Adobe InDesign for document storage and exchange. When a user opens or processes a specially crafted malicious file, the application fails to properly validate memory boundaries, leading to unpredictable behavior. The vulnerability specifically impacts the application's handling of memory structures during file parsing operations, creating opportunities for attackers to exploit memory corruption patterns that can result in arbitrary code execution.
The technical nature of this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions in software systems. This classification indicates that the application does not properly validate array indices or memory access boundaries when processing the malicious indd file structure. The flaw operates through a classic buffer overflow mechanism where the application attempts to access memory locations beyond the allocated buffer space. This type of vulnerability falls under the ATT&CK technique T1059.007 which covers command and scripting interpreter usage, as successful exploitation could allow attackers to execute arbitrary commands within the user context. The vulnerability is particularly dangerous because it requires no special privileges beyond normal user access, making it an attractive target for social engineering campaigns where users might inadvertently open malicious documents.
The operational impact of CVE-2020-9730 extends beyond simple memory corruption to encompass potential full system compromise when exploited. Attackers leveraging this vulnerability could execute malicious code with the privileges of the currently logged-in user, potentially leading to data theft, system persistence mechanisms, or further exploitation of the compromised system. The vulnerability affects organizations that rely heavily on InDesign for graphic design and publishing workflows, making it particularly concerning for creative agencies, publishing houses, and design studios. Security professionals must consider the risk of this vulnerability being exploited in targeted attacks where adversaries craft convincing indd files designed to exploit user trust and workflow automation. The impact is compounded by the fact that legitimate business documents might contain embedded malicious content, making detection and prevention challenging.
Mitigation strategies for CVE-2020-9730 should prioritize immediate software updates from Adobe, specifically upgrading to InDesign version 15.1.2 or later where the vulnerability has been addressed. Organizations should implement strict document validation policies and consider deploying sandboxing solutions for processing untrusted InDesign files. Network-based security controls such as email filtering and web proxies should be configured to block suspicious indd file attachments. Security teams should also consider implementing endpoint protection solutions with behavioral monitoring capabilities to detect anomalous file processing activities. Regular security awareness training for users can help prevent social engineering attacks that might exploit this vulnerability. The remediation approach should follow industry best practices outlined in NIST SP 800-40 and ISO/IEC 27001 standards for vulnerability management and incident response. Organizations should also conduct regular vulnerability assessments to identify other potential memory corruption vulnerabilities in their software ecosystem and ensure proper patch management procedures are in place to maintain system security posture.