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TI-2018-16031 Aliases CVE-2018-1000807GHSA-p28m-34f6-967q

Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a…

Priority MEDIUM 42CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.04075 90th percentileScored 2026-11-07
Fix Partial pyopenssl (PyPI): 17.5.0Red Hat: 1 advisoryRed Hat: 1 fixed, 4 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—pyopenssl (PyPI)before 17.5.017.5.0Patch availableGHSA-p28m-34f6-967q
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • pyopenssl (PyPI) Vendor— Affected before 17.5.0 Fixed in 17.5.0 Patch available GHSA-p28m-34f6-967q

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:pyopenssl:pyopenssl:*:*:*:*:*:*:*:*before 17.5.0VulnerablePyopenssl
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*13VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:pyopenssl:pyopenssl:*:*:*:*:*:*:*:* Versions before 17.5.0 Vulnerable ·Pyopenssl
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-p28m-34f6-967q pyopenssl (PyPI) Fixed in 17.5.0 Advisory →

Red Hat 1 advisory

  • RHSA-2019:0085 Released 2019-01-16 · Red Hat rating Moderate
    pyOpenSSL security and bug fix update
    • Red Hat OpenStack Platform 13.0 pyOpenSSL-17.5.0-1.el7ost, python2-pyOpenSSL-17.5.0-1.el7ost

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenStack Platform 10 (Newton)AffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 12 (Pike)AffectedNo fix planned: Will not fix
Red Hat Storage 3AffectedNo fix planned: Will not fix
Red Hat Virtualization 4AffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 13.0Fixed RHSA-2019:0085
Not affected: 5 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat OpenStack Platform 14 (Rocky)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1000807
  2. 2026-10-03 Alias added: GHSA-p28m-34f6-967q

References

Patch 1

Advisory 4

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences