CVE-2019-2033 : Security Advisory and Response
Learn about CVE-2019-2033, a vulnerability in Android's create_hdr function allowing local privilege escalation. Find out how to mitigate this issue and apply necessary patches.
Android vulnerability in the create_hdr function leading to a use after free issue.
Understanding CVE-2019-2033
What is CVE-2019-2033?
The create_hdr function in dnssd_clientstub.c in Android may result in a use after free vulnerability, allowing attackers to locally escalate privileges without additional execution privileges. No user interaction is required for exploitation.
The Impact of CVE-2019-2033
This vulnerability affects Android versions up to Android-9, tracked with the Android ID A-121327565, potentially enabling elevation of privilege attacks.
Technical Details of CVE-2019-2033
Vulnerability Description
The create_hdr function in dnssd_clientstub.c has a use after free issue, posing a risk of local privilege escalation without needing extra execution privileges.
Affected Systems and Versions
- Product: Android
- Affected Version: Android-9
Exploitation Mechanism
- Attackers can exploit this vulnerability locally to escalate privileges without requiring additional execution privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by Android promptly.
- Monitor official security bulletins for updates and advisories.
Long-Term Security Practices
- Regularly update Android devices to the latest software versions.
- Implement security best practices to mitigate privilege escalation risks.
Patching and Updates
- Stay informed about security updates and apply them as soon as they are released.