PyOpenSSL Use-After-Free vulnerability

HIGH 8.1CVE-2018-1000807 · GHSA-p28m-34f6-967q · PYSEC-2018-23 · Published 08/10/2018 · updated 17/06/2026

Package	Affected versions	Patched versions
pyopenssl PyPI	`< 17.5.0`	`17.5.0`
pyopenssl pyopenssl	`< 17.5.0`	`17.5.0`
openstack redhat	`= 13`	No fix yet

Description

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.

NVD description

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

nvd.nist.gov/vuln/detail/CVE-2018-1000807 · ADVISORY
pyca/pyopenssl#723 · WEB
pyca/pyopenssl commit e738186 · WEB
access.redhat.com/errata/RHSA-2019:0085 · WEB
pyca/pyopenssl · PACKAGE
pypa/advisory-database · WEB
usn.ubuntu.com/3813-1 · WEB
lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html · WEB
usn.ubuntu.com/3813-1 · Third Party Advisory
GitHub Advisory GHSA-p28m-34f6-967q · ADVISORY

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Package

Affected versions

Patched versions

pyopenssl

PyPI

< 17.5.0

17.5.0

pyopenssl

< 17.5.0

17.5.0

openstack

redhat

= 13

No fix yet

Description

NVD description