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.

CVSS v3 5.4 MEDIUM
CVSS v2.0 5.5 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.5^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://www.openwall.com/lists/oss-security/2020/05/07/1	Mailing List Third Party Advisory
https://bugs.launchpad.net/keystone/+bug/1872737	Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-003.html	Vendor Advisory
https://usn.ubuntu.com/4480-1/	Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/05/06/4	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openstack:keystone::::::::
	cpe:2.3:a:openstack:keystone:16.0.0:::::::*

Configuration 2 (hide)

cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

History

No history.

Information

Published : 2020-05-07 00:15

Updated : 2024-02-28 17:47

NVD link : CVE-2020-12692

Mitre link : CVE-2020-12692

CVE.ORG link : CVE-2020-12692

JSON object : View

Products Affected

openstack

keystone

canonical

ubuntu_linux

CWE

CWE-294

Authentication Bypass by Capture-replay

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2020-12692", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2020-05-07T00:15:10.987", "references": [{"url": "http://www.openwall.com/lists/oss-security/2020/05/07/1", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugs.launchpad.net/keystone/+bug/1872737", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://security.openstack.org/ossa/OSSA-2020-003.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/4480-1/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2020/05/06/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-294"}, {"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se detect\u00f3 un problema en OpenStack Keystone versiones anteriores a 15.0.1 y 16.0.0. La API EC2 no presenta una comprobaci\u00f3n TTL de firma para AWS Signature V4. Un atacante puede rastrear el encabezado Authorization y luego usarlo para volver a emitir un token de OpenStack un n\u00famero ilimitado de veces."}], "lastModified": "2022-04-27T14:49:33.780", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "04CBF40B-EE82-4FB1-8B57-502419051BA9", "versionEndExcluding": "15.0.1"}, {"criteria": "cpe:2.3:a:openstack:keystone:16.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "71945B91-B12D-4EF4-AE03-91592D434125"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}