CVE-2018-1000807: Use After Free
It was discovered that pyOpenSSL incorrectly handled memory when handling X509 objects. A remote attacker could use this issue to cause pyOpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. This attack appears to be exploitable via Depends on the calling application and if it retains a reference to the memory. This vulnerability appears to have been fixed in 17.5.0.
Other sources
Python Cryptographic Authority pyopenssl version before 17.5.0 has a use-after-free vulnerability in X509 object handling. This can result in a denial of service or potentially even code execution
Upstream issue:
https://github.com/pyca/pyopenssl/pull/723
— Red Hat
Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a CWE-416: Use After Free vulnerability in X509 object handling that can result in Use after free can lead to possible denial of service or remote code execution.. This attack appear to be exploitable via Depends on the calling application and if it retains a reference to the memory.. This vulnerability appears to have been fixed in 17.5.0.
— Launchpad
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-1000807.
What is the severity of CVE-2018-1000807?
The severity of CVE-2018-1000807 is high with a CVSS score of 8.1.
What is the affected software for CVE-2018-1000807?
The affected software for CVE-2018-1000807 includes python Cryptographic Authority pyopenssl version prior to version 17.5.0.
How can the vulnerability be exploited?
The vulnerability can be exploited through the use after free vulnerability in X509 object handling, which can lead to possible denial of service or remote code execution.
Where can I find more information about CVE-2018-1000807?
You can find more information about CVE-2018-1000807 at the following references: [GitHub](https://github.com/pyca/pyopenssl/pull/723), [Ubuntu Security Notice](https://usn.ubuntu.com/3813-1/), [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2019:0085).