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cloudfoundryCloud FoundryCFOUNDRY:3AB1C9345B0053E693EFDE2D2D9EE7EE
HistoryDec 10, 2018 - 12:00 a.m.

CVE-2018-15754: UAA issues tokens across identity providers if users with matching usernames exist | Cloud Foundry

2018-12-1000:00:00
Cloud Foundry
www.cloudfoundry.org
9

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

61.4%

Severity

Medium

Vendor

Cloud Foundry Foundation

Affected Cloud Foundry Products and Versions

  • UAA release:
    • versions v60 prior to v66.0

Description

Cloud Foundry UAA, versions v60 prior to v66.0, contain an authorization logic error. In environments with multiple identity providers that contain accounts across identity providers with the same username, a remote authenticated user with access to one of these accounts may be able to obtain a token for an account of the same username in the other identity provider.

Mitigation

Users of affected versions should apply the following mitigations or upgrades:

  • * UAA release v66.0
    

Credit

This issue was responsibly reported by the Florian Tack and Torsten Luh of SAP.

History

2018-12-10: Initial vulnerability report published.

2018-02-28: Corrected credit section

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

61.4%

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