Vulnerability CVE-2020-12692
Published: 2020-05-07

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.

Type:

CWE-311

 (Missing Encryption of Sensitive Data)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.5/10
4.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Openstack -> Keystone 

 References:
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://www.openwall.com/lists/oss-security/2020/05/06/4
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