CVE-2025-21001 in Samsung
Summary
by MITRE • 07/08/2025
Improper access control in LeAudioService prior to SMR Jul-2025 Release 1 allows local attackers to stop broadcasting Auracast.
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Analysis
by VulDB Data Team • 07/08/2025
The vulnerability CVE-2025-21001 represents a critical access control flaw within the LeAudioService component of Android systems prior to the SMR July 2025 security release. This issue affects the proper authorization mechanisms that govern broadcasting operations within the Auracast wireless audio transmission protocol. The vulnerability stems from insufficient validation of local attacker privileges when attempting to manipulate the audio broadcasting state, creating a pathway for unauthorized interference with wireless audio streams.
The technical implementation of this flaw resides in the LeAudioService daemon which manages the lifecycle of Auracast broadcasts and associated Bluetooth Low Energy connections. Local attackers with minimal privileges can exploit this weakness to issue commands that terminate active Auracast transmissions without proper authentication or authorization. This misconfiguration allows for the interruption of wireless audio streaming services that rely on the Auracast standard for broadcast audio distribution. The vulnerability specifically impacts the service's ability to distinguish between legitimate administrative commands and unauthorized local interference attempts, effectively bypassing the intended access control policies.
From an operational standpoint, this vulnerability poses significant risks to users of wireless audio systems that utilize Auracast technology. Local attackers can disrupt ongoing audio broadcasts, potentially affecting public address systems, wireless speaker networks, or any device configured to transmit audio content through the Auracast protocol. The impact extends beyond simple disruption to include potential privacy implications, as unauthorized parties could interfere with sensitive audio communications or prevent legitimate users from accessing audio services. This vulnerability particularly affects devices that automatically broadcast audio content or maintain persistent Auracast transmission states.
The security implications of CVE-2025-21001 align with CWE-284, which addresses improper access control vulnerabilities in software systems. This classification indicates that the flaw represents a failure in the authorization mechanisms that should prevent unauthorized access to system resources. The vulnerability also corresponds to techniques documented in the ATT&CK framework under T1068, which covers local privilege escalation and unauthorized access to system services. Organizations should consider this vulnerability as part of a broader attack surface that could enable more sophisticated exploitation patterns when combined with other local access vulnerabilities.
Mitigation strategies should focus on immediate patch application to the SMR July 2025 security release which addresses the access control implementation in LeAudioService. System administrators should also implement additional monitoring for unauthorized service termination commands and establish network segmentation to limit local attack surface exposure. The vulnerability demonstrates the importance of proper privilege separation in system services, particularly those managing wireless communication protocols. Organizations should conduct comprehensive vulnerability assessments of their Android-based systems to identify potential exploitation vectors and ensure that all devices are updated to the latest security patches. Additionally, implementing runtime monitoring for suspicious service termination activities can provide early detection of potential exploitation attempts.