Use After Free in Pyopenssl
CVE-2018-1000807
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.
Vulnerability class: Use-After-Free
EPSS: 0.041 (89.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Pyopenssl
- Canonical Ubuntu_linux — versions 16.04
- Redhat Enterprise_linux_desktop — versions 7.0
- Redhat Enterprise_linux_server — versions 7.0
- Redhat Enterprise_linux_workstation — versions 7.0
- Redhat Openstack — versions 13
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory)
- cve@mitre.org
Frequently asked questions
- What is CVE-2018-1000807?
- CVE-2018-1000807 is a high-severity vulnerability in Pyopenssl, classified under Use After Free. CVSS score: 8.1/10. Published 2018-10-08.
- How severe is CVE-2018-1000807?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2018-1000807 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.