CVE-2018-1000807

NameCVE-2018-1000807
DescriptionPython 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pyopenssl (PTS)bullseye20.0.1-1fixed
bookworm23.0.0-1fixed
trixie24.2.1-1fixed
sid24.3.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pyopensslsource(unstable)17.5.0-1

Notes

[stretch] - pyopenssl <no-dsa> (Minor issue)
[jessie] - pyopenssl <no-dsa> (Minor issue, but also requires at least cryptography 2.1.4 which exposes the X509_up_ref method)
https://github.com/pyca/pyopenssl/pull/723
https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c3509

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