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CVE-2017-8031

Cloud Foundry UAA Denial of Service through client token revocation endpoint

5.3 MediumFix available

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.09%Up 0.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.3

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
CVE-2017-8031
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
3.5 LowAV:N/AC:M/Au:S/C:N/I:N/A:P
Updated
2026-11-02
CVE List No score

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
CVE-2017-8031
Updated
2026-11-02
EUVDEUVD-2022-4277 No score

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
EUVD-2022-4277
Updated
2026-11-03
GitHub AdvisoriesGHSA-j4p3-2m2h-cv5f 5.3

Cloud Foundry UAA Denial of Service through client token revocation endpoint

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
GHSA-j4p3-2m2h-cv5f
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.3

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
CVE-2017-8031
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVGHSA-j4p3-2m2h-cv5f 5.3

Cloud Foundry UAA Denial of Service through client token revocation endpoint

An issue was discovered in Cloud Foundry Foundation cf-release (all versions prior to v279) and UAA (30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1). In some cases, the UAA allows an authenticated user for a particular client to revoke client tokens for other users on the same client. This occurs only if the client is using opaque tokens or JWT tokens validated using the check_token endpoint. A malicious actor could cause denial of service.

Record
GHSA-j4p3-2m2h-cv5f
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 4.6.0 up to 4.7.1
4.7.1
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 4.0.0 up to 4.5.3
4.5.3
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 before 3.20.1
3.20.1
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 4.6.0 up to 4.7.1, plus listed versions
4.6.14.7.0
4.7.1
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 4.0.0 up to 4.5.3, plus listed versions
4.1.04.2.04.3.04.4.04.5.0
4.5.3
org.cloudfoundry.identity:cloudfoundry-identity-server
Maven
 before 3.20.1, plus listed versions
3.0.03.0.13.1.03.10.03.12.0
Show 26 moreShow less
3.13.03.15.03.16.03.18.03.19.03.2.03.2.13.20.03.3.03.3.0.13.3.0.23.3.0.33.3.0.43.3.0.53.4.03.4.23.4.33.4.43.4.53.5.03.6.03.7.03.7.33.8.03.9.03.9.1
3.20.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-8031 is a medium vulnerability (CVSS 5.3) in Cloudfoundry Cf-release, published November 27, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.09%, the 65th percentile. Fixed in org.cloudfoundry.identity:cloudfoundry-identity-server 4.7.1.

References

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