CVE-2018-1000808 : Security Advisory and Response
Learn about CVE-2018-1000808, a vulnerability in pyopenssl versions prior to 17.5.0 that could lead to denial of service due to memory issues. Find mitigation steps and preventive measures here.
This CVE involves a vulnerability in the pyopenssl library before version 17.5.0, potentially leading to a denial of service due to memory issues.
Understanding CVE-2018-1000808
This CVE pertains to a memory release failure in the PKCS #12 Store within pyopenssl versions prior to 17.5.0.
What is CVE-2018-1000808?
The vulnerability in pyopenssl before version 17.5.0 involves a failure to release memory in the PKCS #12 Store, which could result in a denial of service if memory is limited or depleted. The exploit can occur through the calling application or a basic TLS connection initiation.
The Impact of CVE-2018-1000808
The vulnerability could lead to a denial of service if memory resources are exhausted, potentially affecting the availability of the application or system.
Technical Details of CVE-2018-1000808
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in pyopenssl before version 17.5.0 is categorized as CWE-401, involving a failure to release memory in the PKCS #12 Store, which could be exploited to trigger a denial of service.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: All versions before 17.5.0
Exploitation Mechanism
The vulnerability can be exploited through the calling application or a basic TLS connection initiation, particularly when reloading certificates from a PKCS #12 store.
Mitigation and Prevention
To address and prevent the exploitation of CVE-2018-1000808, follow these steps:
Immediate Steps to Take
- Upgrade to version 17.5.0 or later of pyopenssl to mitigate the vulnerability.
- Monitor memory usage to prevent depletion that could trigger the denial of service.
Long-Term Security Practices
- Regularly update software libraries and dependencies to ensure the latest security patches are applied.
- Implement secure coding practices to minimize the risk of memory-related vulnerabilities.
Patching and Updates
Ensure that all systems using pyopenssl are updated to version 17.5.0 or above to eliminate the vulnerability.