Vulnerability Monitor

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CVE-2020-12692

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.

Published

2020-05-07T00:15:10.987

Last Modified

2024-11-21T05:00:05.037

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.4 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.0

Impact Score

4.9

Weaknesses

Type: Primary
CWE-294
CWE-347

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openstack	keystone	< 15.0.1	Yes
Application	openstack	keystone	16.0.0	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes

References

http://www.openwall.com/lists/oss-security/2020/05/07/1 Mailing List, Third Party Advisory ([email protected])
https://bugs.launchpad.net/keystone/+bug/1872737 Third Party Advisory ([email protected])
https://security.openstack.org/ossa/OSSA-2020-003.html Vendor Advisory ([email protected])
https://usn.ubuntu.com/4480-1/ Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2020/05/06/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2020/05/07/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.launchpad.net/keystone/+bug/1872737 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.openstack.org/ossa/OSSA-2020-003.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4480-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2020/05/06/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)