CVE-2023-21237 is classified as a medium severity vulnerability impacting Google Android. This vulnerability allows local information disclosure due to a flaw in the UI of the NotificationContentInflater.java component. Specifically, the issue arises from the potential to hide foreground service notifications, which can be exploited without requiring any additional execution privileges or user interaction. The CVSS score for this vulnerability is 5.5, indicating a moderate risk that organizations should take seriously.
Organizations should prioritize patching immediately, as the implications of this vulnerability could lead to unauthorized access to sensitive information. The vulnerability affects Android 13 and was published on June 28, 2023. Since its disclosure, there has been no public exploit confirmed, but the potential risk warrants attention.
Given that the vulnerability is classified under CWE-200, which pertains to information exposure, it is essential for security teams to assess their exposure and implement necessary mitigations. The risk to organizations includes unauthorized access to sensitive data, which could be detrimental to businesses and their users.
Immediate action is advised to mitigate this vulnerability. Organizations should actively monitor for patches and apply them as they become available to ensure that their systems remain secure.
Vulnerability Details
The vulnerability in question is detailed as follows: In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service notification due to misleading or insufficient UI. The product affected is Android, specifically version 13. The CVE was published on June 28, 2023, and is classified under CWE-200.
With a CVSS score of 5.5, this vulnerability has a medium severity classification. The attack vector is local, with low complexity. The privileges required for exploitation are low, and no user interaction is needed. The confidentiality impact is high, while the integrity and availability impacts are noted as none.
Technical Analysis
The root cause of this vulnerability lies in the insufficient UI design within the NotificationContentInflater.java component. Attackers may leverage this weakness to hide critical notifications, resulting in local information disclosure without additional privileges. The attack vector is local, meaning that an attacker must have physical access to the device. The attack complexity is low, making it easier for attackers to exploit this vulnerability.
No user interaction is required, which increases the risk of exploitation. The vulnerability's impact on confidentiality is significant, as sensitive information can be exposed without proper notification to the user. The integrity and availability impacts are minimal, as the primary risk involves information disclosure.
Risk & Impact Analysis
Real-world deployment risk associated with CVE-2023-21237 is notable, particularly for organizations using Android devices in environments where sensitive information is handled. The ability to hide notifications can lead to significant exposure of confidential data, which is especially concerning in sectors like finance and healthcare.
Organizations should address this vulnerability in priority patch cycles. The potential blast radius includes any device running Android 13, making it critical for organizations to assess their entire fleet of devices. The urgency for remediation is heightened by the fact that this vulnerability is included in the Known Exploited Vulnerabilities catalog, indicating a recognized risk that could be actively targeted.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected version for this vulnerability is Android 13. Organizations should ensure they are not using this version or apply the necessary patches to mitigate the risk.
Mitigation & Remediation
To remediate this vulnerability, organizations should apply the vendor's patches as soon as they are available. Additionally, organizations may consider implementing workarounds until patches are applied, such as disabling foreground service notifications or configuring other security controls.
For further guidance on security practices, organizations can explore more about continuous penetration testing to ensure their defenses are robust.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized access or attempts to hide notifications. Behavioral anomalies, such as sudden changes in notification visibility, should also be investigated.
AppSecure Threat Intelligence Insight
CVE-2023-21237 highlights a critical vulnerability within the Android ecosystem. It underscores the importance of user interface design in preventing information disclosure. Security teams should reflect on how such vulnerabilities can arise from design flaws and ensure rigorous testing of UI components.
To further understand the landscape of vulnerabilities, organizations can refer to resources on vulnerability management programs and the importance of a proactive security posture.
Finally, organizations should stay informed about emerging threats by following best practices in penetration testing methodologies to enhance their overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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