CVE-2024-34129 in Acrobat Mobile Sign
Summary
by MITRE • 06/13/2024
Acrobat Mobile Sign Android versions 24.4.2.33155 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could result in a security feature bypass. An attacker could exploit this vulnerability to access files and directories that are outside the restricted directory and also to overwrite arbitrary files. Exploitation of this issue does not requires user interaction and attack complexity is high.
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Analysis
by VulDB Data Team • 03/23/2025
The vulnerability identified as CVE-2024-34129 represents a critical path traversal flaw in Adobe Acrobat Mobile Sign for Android platforms. This security weakness resides in versions 24.4.2.33155 and earlier, where improper validation of file paths allows malicious actors to bypass intended directory restrictions. The vulnerability falls under the CWE-22 category, which specifically addresses improper limitation of pathname to a restricted directory, a fundamental security flaw that has been consistently documented in cybersecurity literature. The affected application fails to adequately sanitize user-supplied input when processing file operations, creating an opportunity for attackers to manipulate file system access through carefully crafted path sequences.
The technical exploitation of this vulnerability occurs through manipulation of file path parameters within the application's file handling mechanisms. When Acrobat Mobile Sign processes file operations, it does not sufficiently validate or sanitize the input paths, allowing attackers to use directory traversal sequences such as "../" or similar constructs to navigate outside of the intended restricted directories. This flaw enables attackers to access sensitive files and directories that should normally be protected from external access. The vulnerability is particularly concerning because it allows for arbitrary file overwrite capabilities, meaning attackers can not only read files outside the restricted area but also modify or replace existing files with malicious content. The attack complexity is rated as high, indicating that while sophisticated techniques are required, the vulnerability is exploitable without user interaction, making it particularly dangerous in automated attack scenarios.
The operational impact of this vulnerability extends beyond simple file access violations to encompass potential data breaches and system compromise. An attacker who successfully exploits this path traversal vulnerability could gain access to sensitive documents, configuration files, or system resources that should remain protected. The ability to overwrite arbitrary files introduces additional risks including potential system instability, data corruption, or even privilege escalation if the application runs with elevated permissions. Organizations using affected versions of Acrobat Mobile Sign face significant risk of unauthorized access to confidential business documents, personal data, or intellectual property that may be stored within the application's file system. The vulnerability affects the application's core security features, potentially undermining the entire security framework that users rely upon for document signing and management operations. This weakness creates a persistent threat vector that could be exploited repeatedly, making it particularly dangerous for enterprise environments where document security is paramount.
Mitigation strategies for CVE-2024-34129 should prioritize immediate remediation through the application of Adobe's official security patches and updates. Organizations must ensure all instances of Acrobat Mobile Sign are updated to versions that address this specific path traversal vulnerability. System administrators should implement network monitoring to detect potential exploitation attempts and establish baseline file system access controls to minimize the impact of any successful attacks. The ATT&CK framework categorizes this type of vulnerability under techniques involving privilege escalation and credential access, making it important for security teams to monitor for suspicious file access patterns. Additionally, organizations should conduct comprehensive vulnerability assessments to identify any other applications or systems that may be similarly vulnerable to path traversal attacks. Regular security audits and penetration testing should include validation of file system access controls to ensure that proper input sanitization and path validation mechanisms are in place, preventing attackers from leveraging similar weaknesses in other software components.