CVE-2019-11772 : Vulnerability Insights and Analysis
Learn about CVE-2019-11772 affecting Eclipse OpenJ9 prior to 0.15, allowing arbitrary writes to memory addresses beyond byte array bounds. Find mitigation steps and long-term security practices here.
Eclipse OpenJ9 prior to version 0.15 is affected by a vulnerability that allows arbitrary writes to memory addresses beyond the end of a byte array within Java code executed under a SecurityManager.
Understanding CVE-2019-11772
This CVE involves a specific method in Eclipse OpenJ9 that lacks proper checks, leading to potential out-of-bounds writes.
What is CVE-2019-11772?
The String.getBytes(int, int, byte[], int) method in versions earlier than 0.15 of Eclipse OpenJ9 allows for arbitrary writes to memory addresses beyond the end of a byte array.
The Impact of CVE-2019-11772
The vulnerability enables attackers to manipulate memory addresses, potentially leading to unauthorized access or system compromise.
Technical Details of CVE-2019-11772
Eclipse OpenJ9's vulnerability can have severe consequences if exploited.
Vulnerability Description
The String.getBytes(int, int, byte[], int) method in Eclipse OpenJ9 versions prior to 0.15 lacks necessary checks, allowing for arbitrary writes beyond the bounds of a byte array.
Affected Systems and Versions
- Product: Eclipse OpenJ9
- Vendor: The Eclipse Foundation
- Versions Affected: < 0.15.0
Exploitation Mechanism
Attackers can exploit this vulnerability to perform arbitrary writes to memory addresses beyond the end of a byte array within Java code executed under a SecurityManager.
Mitigation and Prevention
Protecting systems from CVE-2019-11772 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Eclipse OpenJ9 to version 0.15.0 or newer to mitigate the vulnerability.
- Monitor for any unusual activities that might indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and apply patches promptly to address known vulnerabilities.
- Implement proper input validation and boundary checks in code to prevent similar issues.
Patching and Updates
- Stay informed about security advisories and updates from Eclipse and other relevant vendors.