CVE-2020-12691
First published: Wed May 06 2020(Updated: )
An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2 credential for themselves for a project that they have a specified role on, and then perform an update to the credential user and project, allowing them to masquerade as another user. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenStack Keystone | <15.0.1 | |
| OpenStack Keystone | =16.0.0 | |
| Canonical Ubuntu Linux | =18.04 | |
| pip/keystone | =16.0.0 | 16.0.1 |
| pip/keystone | <15.0.1 | 15.0.1 |
| debian/keystone | 2:18.0.0-3+deb11u1 2:22.0.0-2 2:26.0.0-1 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2020/05/07/2
- https://bugs.launchpad.net/keystone/+bug/1872733
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa@%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2@%3Ccommits.druid.apache.org%3E
- https://security.openstack.org/ossa/OSSA-2020-004.html
- https://usn.ubuntu.com/4480-1/
- https://www.openwall.com/lists/oss-security/2020/05/06/5
- https://launchpad.net/bugs/cve/CVE-2020-12691
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2020-12691
- https://github.com/openstack/keystone/commit/37e9907a176dad6843819b1bec4946c3aecc4548
- https://usn.ubuntu.com/4480-1
- https://github.com/advisories/GHSA-4427-7f3w-mqv6 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2020-12691
- https://github.com/openstack/keystone/commit/40cbb7bebd50276412daa1981ff5a7c7b3b899a5
- https://github.com/openstack/keystone/commit/95b2bbeab113d9f04d1c81f7f1b48bf692bce979
- https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2020-55.yaml
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12691
- https://ubuntu.com/security/CVE-2020-12691
Frequently Asked Questions
What is the severity of CVE-2020-12691?
The severity of CVE-2020-12691 is high, with a severity score of 8.8.
How does CVE-2020-12691 affect OpenStack Keystone?
CVE-2020-12691 affects OpenStack Keystone versions before 15.0.1 and 16.0.0.
How can an authenticated user exploit CVE-2020-12691?
An authenticated user can create an EC2 credential for themselves and masquerade as another user.
What is the remedy for CVE-2020-12691?
The recommended remedy for CVE-2020-12691 is to update to the latest versions of OpenStack Keystone, which are 15.0.1 and 16.0.0.
What is the Common Weakness Enumeration (CWE) ID for CVE-2020-12691?
CVE-2020-12691 is associated with CWE ID 863.
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