CVE-2013-2255: Keystone Improper Certificate Validation Vulnerability
Summary
CVE-2013-2255: OpenStack Keystone and other components vulnerable to Improper Certificate Validation. Affects keystone versions < 8.0.0a0. Fixed in 8.0.0a0. How to fix ↓
Also tracked for
- cinder · PyPI
- neutron · PyPI
- python-keystoneclient · PyPI
- python-keystoneclient · PyPI
- keystone · Debian:11
The same CVE-2013-2255 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Keystone is the identity service used by OpenStack, providing authentication and authorization services for cloud applications. It is a critical component of the OpenStack ecosystem, enabling users to manage their identities and access resources securely. However, certain versions of Keystone and other OpenStack components are vulnerable to improper validation of SSL certificates, which can expose users to security risks.
Vulnerability Detail
The vulnerability arises from the failure of HTTPSConnections in OpenStack Keystone 2013 and OpenStack Compute 2013.1 to validate server-side SSL certificates properly. This oversight can allow attackers to perform man-in-the-middle attacks, intercepting sensitive data or impersonating legitimate services. The lack of proper certificate validation compromises the integrity and confidentiality of communications, potentially leading to unauthorized access and data breaches.
How To Fix
Latest published version: 30.0.0 as of 22 Oct 2026
pip install --upgrade "keystone==30.0.0"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
8.0.0a0
This is the first release that contains the fix.
pip install --upgrade "keystone==8.0.0a0"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you can implement additional network security measures, such as using a VPN or ensuring that your network traffic is encrypted. However, these measures do not replace the need for a proper fix and should only be used until the package is updated.
Conclusion
In summary, CVE-2013-2255 represents a significant security vulnerability in OpenStack Keystone due to improper SSL certificate validation. Users are strongly advised to update their Keystone installations to the patched version to mitigate risks associated with this vulnerability.
See every vulnerability recorded for keystone →
FAQ
CVE-2013-2255 is a vulnerability in OpenStack Keystone that allows improper validation of SSL certificates, potentially leading to security breaches.
The vulnerability affects Keystone 2013 and OpenStack Compute 2013.1, among possibly other OpenStack components.
The risks include man-in-the-middle attacks, unauthorized access to sensitive data, and potential data breaches.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring signup.
The CVSS score for this vulnerability is 5.9, indicating a moderate level of severity.
References
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