CVE-2019-7729 in Certificate
Summary
by MITRE
An issue was discovered in the Bosch Smart Camera App before 1.3.1 for Android. Due to setting of insecure permissions, a malicious app could potentially succeed in retrieving video clips or still images that have been cached for clip sharing. (The Bosch Smart Home App is not affected. iOS Apps are not affected.)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 05/12/2020
The vulnerability CVE-2019-7729 represents a critical security flaw in the Bosch Smart Camera App for Android systems prior to version 1.3.1. This issue stems from improper permission configuration that creates an exploitable vector for malicious applications to access sensitive user data. The flaw specifically affects the app's handling of cached media files including video clips and still images that are intended for sharing purposes. The vulnerability is particularly concerning because it directly impacts user privacy and data confidentiality, as unauthorized applications can potentially extract media content that users intended to share securely.
The technical root cause of this vulnerability lies in the insecure permission model implemented by the Bosch Smart Camera App. According to CWE-276, this represents a classic case of improper privilege management where the application fails to properly restrict access to cached media files. The app's permission settings do not adequately enforce access controls, allowing malicious applications to bypass normal security boundaries and retrieve cached video and image data. This misconfiguration creates a path for privilege escalation and unauthorized data access that violates fundamental security principles of least privilege and access control.
The operational impact of this vulnerability extends beyond simple data theft to encompass broader privacy and security implications for Bosch camera users. Attackers with malicious applications installed on affected devices can potentially access personal video recordings and still images that users have cached for sharing purposes. This creates a significant risk for users who may have captured sensitive or private content that could be extracted without their knowledge or consent. The vulnerability particularly affects users who rely on smart home security cameras for monitoring their properties, as it could enable unauthorized access to surveillance footage that may contain personal information or security-sensitive data.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1074.001 which covers data staging through the use of remote access tools and credential dumping. The flaw enables malicious actors to stage stolen data by accessing cached media files without requiring additional authentication or network access. The attack surface is particularly broad since the vulnerability affects Android devices where the malicious application can be installed without significant user interaction, potentially through phishing campaigns or malicious app distribution channels. The fact that iOS and Bosch Smart Home App versions are unaffected suggests the issue is specific to the Android implementation's permission handling and file system access controls.
The recommended mitigations for this vulnerability include immediate upgrade to Bosch Smart Camera App version 1.3.1 or later, which addresses the insecure permission settings through proper access control implementation. System administrators and users should also implement additional security measures such as regular app updates, monitoring for suspicious applications, and employing mobile device management solutions that can restrict app permissions. Organizations using Bosch smart cameras should conduct security assessments to identify any other potential vulnerabilities in their smart home ecosystems and ensure proper network segmentation to limit the impact of such vulnerabilities. The fix should implement proper file system permissions and access controls that align with security best practices and prevent unauthorized applications from accessing cached media files.