Use After Free The advisory has been revoked - it doesn't affect any version of package pyOpenSSL (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS7-PYOPENSSL-1988214
- published26 Jul 2021
- disclosed29 Nov 2017
Introduced: 29 Nov 2017
CVE-2018-1000807 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pyOpenSSL package and not the pyOpenSSL package as distributed by Centos.
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.
References
- https://github.com/pyca/pyopenssl/pull/723
- https://access.redhat.com/security/cve/CVE-2018-1000807
- https://access.redhat.com/errata/RHSA-2019:0085
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html
- https://usn.ubuntu.com/3813-1/
- https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c3509