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Fencer Vulns
medium 5.3

CVE-2017-8031 json

Cloud Foundry UAA Denial of Service through client token revocation endpoint

published 2017-11-27 8 y ago modified 2026-06-17 4 mo ago also GHSA-j4p3-2m2h-cv5f , EUVD-2022-4277

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.cloudfoundry.identity:cloudfoundry-identity-server 3.20.1, 4.5.3, 4.7.1
  • cloudfoundry uaa-release 30.6, 45.4

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:N/A:P
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.cloudfoundry.identity:cloudfoundry-identity-server
>=4.6.0, <4.7.1
>=4.0.0, <4.5.3
<3.20.1
4.7.1
4.5.3
3.20.1

Affected products

  • n/a cf-release and UAA cf-release: All versions prior to v279, UAA: 30.x versions prior to 30.6, 45.x versions prior to 45.4, 52.x versions prior to 52.1

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.