CVE-2024-34622 in Notes
Summary
by MITRE • 08/07/2024
Out-of-bounds write in appending paragraph in Samsung Notes prior to version 4.4.21.62 allows local attackers to potentially execute arbitrary code with Samsung Notes privilege.
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Analysis
by VulDB Data Team • 08/10/2024
The vulnerability identified as CVE-2024-34622 represents a critical out-of-bounds write flaw discovered in Samsung Notes application versions prior to 4.4.21.62. This issue manifests during the process of appending paragraphs within the note-taking application, creating a potential pathway for local attackers to escalate privileges and execute arbitrary code with the elevated privileges of the Samsung Notes process. The flaw exists at the intersection of memory management and input validation, where insufficient bounds checking allows malicious data to overwrite adjacent memory locations. This type of vulnerability falls under the common weakness enumeration CWE-787, which specifically addresses out-of-bounds write conditions that can lead to arbitrary code execution. The vulnerability's impact is particularly concerning because it operates within a privileged application context, meaning successful exploitation could provide attackers with direct access to the application's capabilities and potentially the underlying system resources.
The technical implementation of this vulnerability stems from improper validation of paragraph data during the append operation within Samsung Notes. When users or malicious actors attempt to add new paragraphs to existing notes, the application fails to properly validate the size and boundaries of the incoming data. This insufficient input sanitization creates a scenario where an attacker can craft malicious input that exceeds the allocated memory buffer, causing the application to write data beyond its intended memory boundaries. The flaw is particularly dangerous because it operates in a local context, meaning attackers do not require network access or complex attack vectors to exploit the vulnerability. The memory corruption that results from this out-of-bounds write can be leveraged to overwrite critical program data structures, function pointers, or return addresses, ultimately enabling code execution. This exploitation technique aligns with ATT&CK tactic T1068, which covers the use of local privilege escalation techniques, and specifically relates to the use of memory corruption vulnerabilities for privilege escalation.
The operational impact of CVE-2024-34622 extends beyond simple local privilege escalation, as it provides attackers with a potential foothold for further system compromise. Since Samsung Notes is a core application on Samsung devices, successful exploitation could allow attackers to access sensitive user data, manipulate note content, or potentially escalate to full system compromise. The vulnerability affects Samsung devices running affected versions of the Samsung Notes application, making it particularly relevant for organizations using Samsung mobile devices in their enterprise environments. The out-of-bounds write vulnerability creates a direct pathway for attackers to gain elevated privileges within the application context, which could then be used to access other applications or system resources. This type of vulnerability demonstrates the critical importance of proper memory management and input validation in mobile applications, as even seemingly benign operations like appending text can become attack vectors when proper security controls are absent.
The recommended mitigations for CVE-2024-34622 focus on immediate application updates and ongoing security practices. Samsung has addressed this vulnerability in version 4.4.21.62 and later, making it essential for all users to update their Samsung Notes applications immediately. System administrators should prioritize patch management for Samsung devices within their environments, particularly those running older versions of the application. Organizations should also implement monitoring for suspicious activity related to Samsung Notes and consider deploying application whitelisting policies to prevent unauthorized modifications. The vulnerability highlights the necessity of comprehensive input validation and memory safety practices in mobile application development, emphasizing the need for secure coding practices throughout the software development lifecycle. Additionally, users should be educated about the importance of keeping their applications updated and should avoid installing unofficial or modified versions of applications that may contain unpatched vulnerabilities. The remediation process should include verification that the updated application version properly handles paragraph append operations without causing memory corruption, ensuring that the vulnerability has been effectively addressed.