CVE-2020-15224 : Exploit Details and Defense Strategies
Discover the information disclosure vulnerability in Open Enclave before version 0.12.0, allowing attackers to read privileged data from the enclave heap. Learn about the impact, technical details, and mitigation steps for CVE-2020-15224.
In Open Enclave before version 0.12.0, an information disclosure vulnerability exists when an enclave application using the syscalls provided by the sockets.edl is loaded by a malicious host application. An attacker who successfully exploited the vulnerability could read privileged data from the enclave heap across trust boundaries. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The issue has been addressed in version 0.12.0 and the current master branch. Users will need to recompile their applications against the patched libraries to be protected from this vulnerability.
Understanding CVE-2020-15224
In this section, we will delve into the details of the CVE-2020-15224 vulnerability.
What is CVE-2020-15224?
CVE-2020-15224 is an information disclosure vulnerability in Open Enclave before version 0.12.0, allowing attackers to read privileged data from the enclave heap.
The Impact of CVE-2020-15224
The vulnerability has a CVSS base score of 6.8, with a medium severity rating. It poses a high confidentiality impact, allowing attackers to access confidential enclave information.
Technical Details of CVE-2020-15224
Let's explore the technical aspects of CVE-2020-15224.
Vulnerability Description
The vulnerability in Open Enclave before version 0.12.0 enables attackers to leak enclave memory contents by exploiting syscalls provided by sockets.edl.
Affected Systems and Versions
- Product: openenclave
- Vendor: openenclave
- Versions Affected: < 0.12.0
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: Low
- User Interaction: None
- Scope: Changed
- Vector String: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Mitigation and Prevention
Learn how to mitigate and prevent CVE-2020-15224.
Immediate Steps to Take
- Update to version 0.12.0 or the current master branch.
- Recompile applications against patched libraries.
Long-Term Security Practices
- Regularly update software and libraries.
- Implement secure coding practices.
- Conduct security audits and assessments.
Patching and Updates
Ensure timely patching and updates to protect against known vulnerabilities.