CVE-2017-0857 in Android
Summary
by MITRE
Another vulnerability in the Android media framework (n/a). Product: Android. Versions: 7.0, 7.1.1, 7.1.2, 8.0. Android ID: A-65122447.
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Analysis
by VulDB Data Team • 12/07/2019
The vulnerability identified as CVE-2017-0857 represents a critical flaw within the Android media framework that affects multiple versions including Android 7.0, 7.1.1, 7.1.2, and 8.0. This issue resides in the system's media processing capabilities and demonstrates the ongoing challenges in securing complex multimedia frameworks that handle various file formats and codecs. The Android media framework serves as a foundational component for handling audio and video content across the platform, making it a prime target for exploitation. The vulnerability was assigned Android ID A-65122447, indicating its severity and the specific attention it required from Google's security team. This particular flaw highlights the inherent complexity of multimedia processing systems where improper input validation can lead to system-wide compromises.
The technical nature of this vulnerability stems from inadequate input validation within the media framework's handling of specially crafted media files. Attackers can exploit this weakness by preparing malicious media content that triggers unexpected behavior in the underlying system components. The flaw typically manifests through buffer overflows or memory corruption issues that occur when the framework processes malformed media data. Such vulnerabilities often leverage the principle of privilege escalation, where unprivileged user applications can manipulate system-level components through carefully constructed input data. The vulnerability's classification aligns with CWE-121, which describes heap-based buffer overflow conditions, and may also relate to CWE-125, representing out-of-bounds read conditions. These weaknesses in the media framework demonstrate how multimedia processing components can become attack vectors for broader system compromise.
The operational impact of CVE-2017-0857 extends beyond simple media playback failures, potentially enabling remote code execution and system-level privilege escalation. When exploited successfully, this vulnerability allows attackers to execute arbitrary code with elevated privileges, effectively bypassing normal security boundaries within the Android operating system. The affected versions represent a significant portion of Android users, making this vulnerability particularly dangerous in the context of widespread deployment. Mobile devices running these affected versions become susceptible to attacks that could result in complete system compromise, data exfiltration, and persistent backdoor installation. The vulnerability's exploitation capabilities align with ATT&CK technique T1059, which covers command and scripting interpreter usage, and T1068, representing exploit for privilege escalation. These attacks can be delivered through various vectors including malicious email attachments, compromised websites, or infected media files downloaded from untrusted sources.
Mitigation strategies for CVE-2017-0857 require immediate system updates and patch management procedures to ensure all affected Android devices receive security patches. Users should prioritize updating their Android systems to versions that contain fixes for this vulnerability, typically released as part of regular security updates. Organizations deploying Android devices should implement comprehensive patch management policies that include monitoring for security advisories and rapid deployment of fixes. Network administrators can also employ additional security measures such as media file scanning and content filtering to prevent exploitation attempts. The vulnerability underscores the importance of secure coding practices in multimedia frameworks and emphasizes the need for thorough input validation and memory management. Security professionals should consider implementing device monitoring solutions that can detect anomalous behavior indicative of exploitation attempts. Additionally, user education regarding the risks of downloading media content from untrusted sources remains critical in reducing the attack surface for this class of vulnerability.