# CVE-2014-5251: OpenStack Identity (Keystone) Multiple vulnerabilities in revocation events

> Remote authenticated users can retain access using expired tokens due to incorrect timestamp precision in the MySQL token driver.

- **Severity:** Medium 4.9 (`AV:N/AC:M/Au:S/C:P/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Aug 2014
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2014-5251, GHSA-gmvp-5rf9-mxcm, PYSEC-2014-107, UBUNTU-CVE-2014-5251

## What is CVE-2014-5251?

CVE-2014-5251 is a medium-severity authentication bypass vulnerability in Canonical Ubuntu Linux, published on 25 Aug 2014. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The MySQL token driver in OpenStack Identity (Keystone) 2014.1.x before 2014.1.2.1 and Juno before Juno-3 stores timestamps with the incorrect precision, which causes the expiration comparison for tokens to fail and allows remote authenticated users to retain access via an expired token.

Weakness: CWE-255

## Which versions are affected by CVE-2014-5251?

3 open source packages ship an affected version, including keystone. It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `keystone` | PyPI | All versions | 8.0.0a0 |
| `keystone` | PyPI | All versions | 8.0.0a0 |
| `keystone` | PyPI | All versions | 8.0.0a0 |

Products: Canonical Ubuntu Linux, Openstack Keystone.

## How do I fix CVE-2014-5251?

Upgrade keystone to 8.0.0a0 or later.

## Is CVE-2014-5251 being exploited?

There is no known exploitation of CVE-2014-5251 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-5251 and fix it if it is affected.

What it is: CVE-2014-5251 is a medium-severity authentication bypass vulnerability in Canonical Ubuntu Linux, published on 25 Aug 2014. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2014-5251 in the wild and no public exploit code.

Affected packages and fixed versions:
- keystone (PyPI): affected all versions; fixed in 8.0.0a0
- keystone (PyPI): affected all versions; fixed in 8.0.0a0
- keystone (PyPI): affected all versions; fixed in 8.0.0a0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2014-5251/ (Markdown: https://insights.sbomify.com/CVE-2014-5251/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-5251
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-5251
- OSV: https://osv.dev/vulnerability/CVE-2014-5251

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-5251/
Summaries are generated and may contain mistakes; the official description above is the record.