CVE-2020-12692
MEDIUM5.4EPSS 0.14%OpenStack Keystone does not check signature TTL of the EC2 credential auth method
Published: 5/24/2022Modified: 4/28/2026
Also known as:DEBIAN-CVE-2020-12692
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.
Affected packages (3)
- Debian/keystonefrom 0, < 2:17.0.0~rc2-1
- PyPI/keystone>= 16.0.0.0rc1, < 16.0.0
- PyPI/keystonefrom 0, < 15.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
References (11)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-12692
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-12692
- PATCHhttps://github.com/openstack/keystone
- WEBhttps://bugs.launchpad.net/keystone/+bug/1872737
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2020-56.yaml
- WEBhttps://opendev.org/openstack/keystone/commit/ab89ea749013e7f2c46260f68504f5687763e019
- WEBhttps://security.openstack.org/ossa/OSSA-2020-003.html
- WEBhttps://usn.ubuntu.com/4480-1
- WEBhttps://usn.ubuntu.com/4480-1/
- WEBhttps://www.openwall.com/lists/oss-security/2020/05/06/4
- WEBhttp://www.openwall.com/lists/oss-security/2020/05/07/1