CVE-2020-27039 : Exploit Details and Defense Strategies
Learn about CVE-2020-27039, a vulnerability in Android-11's ServiceRecord.java allowing a permission bypass, potentially leading to local information disclosure. Find mitigation steps here.
Android-11 postNotification in ServiceRecord.java allows a permission bypass via an unsafe PendingIntent, potentially leading to local information disclosure.
Understanding CVE-2020-27039
This CVE involves an information disclosure vulnerability in Android-11.
What is CVE-2020-27039?
CVE-2020-27039 is a vulnerability in Android-11's postNotification in ServiceRecord.java, enabling a permission bypass through an unsafe PendingIntent. Exploitation may result in local information disclosure without requiring user interaction.
The Impact of CVE-2020-27039
The vulnerability could lead to local information disclosure, requiring User execution privileges but no user interaction for exploitation.
Technical Details of CVE-2020-27039
This section provides more technical insights into the CVE.
Vulnerability Description
The issue lies in postNotification of ServiceRecord.java, allowing a potential permission bypass due to an unsafe PendingIntent.
Affected Systems and Versions
- Product: Android
- Version: Android-11
Exploitation Mechanism
The vulnerability can be exploited to achieve local information disclosure without the need for user interaction.
Mitigation and Prevention
Protect your systems from CVE-2020-27039 with the following steps:
Immediate Steps to Take
- Apply security patches promptly.
- Monitor for any unusual activities on the affected systems.
Long-Term Security Practices
- Regularly update and patch your Android devices.
- Implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
Ensure that your Android devices are updated with the latest security patches to mitigate the risk of exploitation.