CVE-2024-49386 in Cyber Files
Summary
by MITRE • 10/17/2024
Sensitive information disclosure due to spell-jacking. The following products are affected: Acronis Cyber Files (Windows) before build 9.0.0x24.
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Analysis
by VulDB Data Team • 03/04/2025
The vulnerability identified as CVE-2024-49386 represents a sensitive information disclosure flaw within Acronis Cyber Files for Windows versions prior to build 9.0.0x24. This issue stems from a spell-jacking mechanism that allows unauthorized access to confidential data through improper handling of text processing operations. The vulnerability specifically affects the spell-checking functionality implemented within the software's text input mechanisms, creating a potential pathway for attackers to extract sensitive information from the system. The spell-jacking technique exploits the way the application processes user input and performs spell-check operations, potentially exposing data that should remain protected.
The technical implementation of this vulnerability involves the spell-checking subsystem failing to properly sanitize or validate input data during text processing operations. When users interact with text fields within the Acronis Cyber Files application, the spell-checking engine processes the input and may inadvertently expose underlying data structures or memory contents. This flaw typically occurs when the spell-checking mechanism does not adequately separate user input from internal application data, allowing malicious actors to manipulate text input in ways that reveal sensitive information. The vulnerability demonstrates poor input validation and data isolation practices within the application's text processing pipeline.
The operational impact of CVE-2024-49386 extends beyond simple information disclosure, as it can potentially enable attackers to access confidential data, credentials, or system information that should remain protected. This vulnerability falls under the broader category of information exposure flaws and aligns with CWE-200, which addresses information exposure through improper access control or data handling. The potential for exploitation increases when users interact with text fields in the application, as the spell-checking feature may inadvertently leak data from memory buffers or internal data structures. Attackers could leverage this vulnerability to gain insights into system configurations, user data, or application internals that could be used for further exploitation or targeted attacks.
Organizations using affected versions of Acronis Cyber Files should prioritize immediate remediation through the installation of the latest build 9.0.0x24 or subsequent security updates. The vulnerability represents a significant risk to data confidentiality and aligns with attack patterns documented in the MITRE ATT&CK framework under the information disclosure tactic. Security teams should conduct thorough assessments of their environments to identify any potential exploitation attempts and implement network monitoring to detect anomalous spell-checking activity. Additionally, administrators should review access controls and data handling procedures within the application to ensure that text processing operations do not inadvertently expose sensitive information. The fix implemented in the updated build addresses the root cause by improving input sanitization and data isolation within the spell-checking subsystem, thereby preventing unauthorized information disclosure through text processing operations.