CVE-2020-12692
First published: Wed May 06 2020(Updated: )
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.
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 | >=0<15.0.1 | 15.0.1 |
| pip/keystone | >=16.0.0.0rc1<16.0.0 | 16.0.0 |
| 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/2020/05/07/1
- https://bugs.launchpad.net/keystone/+bug/1872737
- https://security.openstack.org/ossa/OSSA-2020-003.html
- https://usn.ubuntu.com/4480-1/
- https://www.openwall.com/lists/oss-security/2020/05/06/4
- https://launchpad.net/bugs/cve/CVE-2020-12692
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12692
- https://nvd.nist.gov/vuln/detail/CVE-2020-12692
- https://security-tracker.debian.org/tracker/CVE-2020-12692
- https://ubuntu.com/security/CVE-2020-12692
- https://opendev.org/openstack/keystone/commit/ab89ea749013e7f2c46260f68504f5687763e019
- https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2020-56.yaml
- https://usn.ubuntu.com/4480-1
- https://github.com/advisories/GHSA-rqw2-hhrf-7936 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2020-12692?
The severity of CVE-2020-12692 is medium.
How does the EC2 API vulnerability in CVE-2020-12692 affect OpenStack Keystone?
The EC2 API vulnerability in CVE-2020-12692 allows an attacker to reissue an OpenStack token an unlimited number of times.
Which versions of OpenStack Keystone are affected by CVE-2020-12692?
OpenStack Keystone versions before 15.0.1 and 16.0.0 are affected by CVE-2020-12692.
How can I fix the vulnerability in OpenStack Keystone?
To fix the vulnerability in OpenStack Keystone, you should update to version 15.0.1 or 16.0.0.
Where can I find more information about CVE-2020-12692?
More information about CVE-2020-12692 can be found at the following references: [Reference 1](http://www.openwall.com/lists/oss-security/2020/05/07/1), [Reference 2](https://bugs.launchpad.net/keystone/+bug/1872737), [Reference 3](https://security.openstack.org/ossa/OSSA-2020-003.html).
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