CVE-2018-1000807

moderate-risk

Published 2018-10-08

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.

Do I need to act?

2.9% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.1/10 High

NETWORK / HIGH complexity

Affected Products (6)

Pyopenssl

Ubuntu Linux

Openstack

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Workstation

Affected Vendors

Redhat Canonical Pyopenssl

References (10)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0085

https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c350...

Patch https://github.com/pyca/pyopenssl/pull/723

Third Party Advisory https://usn.ubuntu.com/3813-1/

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0085

https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c350...

Patch https://github.com/pyca/pyopenssl/pull/723

Third Party Advisory https://usn.ubuntu.com/3813-1/

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 6/34 · Minimal

Exposure 13/34 · Low