Medium severity · published May 7, 2020
CVE-2020-12692
An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0
5.4
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keystone · Openstack
before 15.0.1; 16.0.0 · source: NVD
UL
Ubuntu Linux · Canonical
18.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12692
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12692
Mailing List
http://www.openwall.com/lists/oss-security/2020/05/07/1
Third Party Advisory
https://bugs.launchpad.net/keystone/+bug/1872737
Vendor Advisory
https://security.openstack.org/ossa/OSSA-2020-003.html
Third Party Advisory
https://usn.ubuntu.com/4480-1/
Mailing List
https://www.openwall.com/lists/oss-security/2020/05/06/4
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