CVE-2009-2988 in Acrobat Reader
Summary
by MITRE
Adobe Reader and Acrobat 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2 do not properly validate input, which allows attackers to cause a denial of service via unspecified vectors.
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Analysis
by VulDB Data Team • 04/26/2025
Adobe Reader and Acrobat versions prior to specific patches contain a critical input validation vulnerability that enables remote attackers to trigger denial of service conditions through unspecified attack vectors. This vulnerability exists within the software's handling of malformed input data, where insufficient validation mechanisms fail to properly sanitize or reject potentially harmful payloads. The affected versions include Adobe Reader 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2, representing a significant portion of the software's user base during that time period. The flaw falls under the category of improper input validation, which is classified as CWE-20 in the Common Weakness Enumeration framework and represents a fundamental security weakness that allows attackers to manipulate application behavior through crafted input.
The technical implementation of this vulnerability allows attackers to craft malicious input that, when processed by the affected Adobe applications, causes the software to crash or become unresponsive. This denial of service condition can be achieved through various attack vectors that exploit the insufficient validation checks in place within the application's input processing pipeline. The vulnerability's impact extends beyond simple application crashes, as it can potentially be leveraged to disrupt business operations where Adobe Reader is used for critical document processing tasks. Attackers can exploit this weakness by presenting specially crafted documents or data streams that bypass normal input sanitization procedures, causing the application to enter an unstable state where it cannot properly handle subsequent legitimate input.
From an operational perspective, this vulnerability presents significant risks to organizations that rely heavily on Adobe Reader for document management and processing. The denial of service conditions can result in productivity losses, disruption of business workflows, and potential security implications if attackers use the vulnerability to create persistent service interruptions. The affected versions represent a substantial user base that would be vulnerable to exploitation, making this a widespread concern for enterprise security teams. Organizations utilizing these older versions face increased risk of service disruption and potential compromise of their document processing environments, particularly in scenarios where automated document handling systems depend on Adobe Reader functionality.
Mitigation strategies for this vulnerability require immediate patch deployment to upgrade affected systems to versions 7.1.4, 8.1.7, or 9.2, depending on the specific software version in use. Security administrators should implement comprehensive patch management procedures to ensure all systems receive the necessary updates promptly. Additional protective measures include network segmentation to limit access to Adobe Reader installations, implementation of application whitelisting policies to restrict execution of unauthorized software, and enhanced monitoring of system logs for signs of exploitation attempts. Organizations should also consider implementing sandboxing techniques and restricting user privileges when processing untrusted documents to minimize potential impact from successful exploitation attempts. This vulnerability demonstrates the importance of maintaining up-to-date software versions and implementing robust security practices to prevent exploitation of known weaknesses in widely used applications. The ATT&CK framework categorizes this type of vulnerability under the T1499 technique for network denial of service, highlighting the operational impact that can result from exploitation of input validation flaws in enterprise software environments.