CVE-2018-11047: Cloudfoundry identity server Cloud Foundry UAA Accepts Refresh Vulnerability

HIGH
Advisory Identifier: GHSA-r4v8-9hgx-vm6m
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CVSS 7.5
CWE-863
Published
Advisory Summary

CVE-2018-11047 is a HIGH (CVSS 7.5) cloud foundry uaa accepts refresh vulnerability (CWE-863: Incorrect Authorization) affecting Cloudfoundry identity server libraries in the Maven ecosystem. The issue involves cloud foundry uaa accepts refresh token as access token on admin endpoints. Remediation is available by upgrading affected packages to version 4.5.7, 4.7.6, 4.10.2, 4.12.4, 4.19.2.

CVE-2018-11047 at a Glance

CVE Identifier CVE-2018-11047
GHSA Identifier GHSA-r4v8-9hgx-vm6m
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-863: Incorrect Authorization
Affected Product Cloudfoundry identity server
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2018-11047

To remediate this vulnerability, upgrade all affected Cloudfoundry identity server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.cloudfoundry.identity:cloudfoundry-identity-server fixed: 4.5.7 
<dependency>
    <groupId>org.cloudfoundry.identity</groupId>
    <artifactId>cloudfoundry-identity-server</artifactId>
    <version>4.5.7</version>
</dependency>
org.cloudfoundry.identity:cloudfoundry-identity-server fixed: 4.7.6 
<dependency>
    <groupId>org.cloudfoundry.identity</groupId>
    <artifactId>cloudfoundry-identity-server</artifactId>
    <version>4.7.6</version>
</dependency>
org.cloudfoundry.identity:cloudfoundry-identity-server fixed: 4.10.2 
<dependency>
    <groupId>org.cloudfoundry.identity</groupId>
    <artifactId>cloudfoundry-identity-server</artifactId>
    <version>4.10.2</version>
</dependency>
org.cloudfoundry.identity:cloudfoundry-identity-server fixed: 4.12.4 
<dependency>
    <groupId>org.cloudfoundry.identity</groupId>
    <artifactId>cloudfoundry-identity-server</artifactId>
    <version>4.12.4</version>
</dependency>
org.cloudfoundry.identity:cloudfoundry-identity-server fixed: 4.19.2 
<dependency>
    <groupId>org.cloudfoundry.identity</groupId>
    <artifactId>cloudfoundry-identity-server</artifactId>
    <version>4.19.2</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.cloudfoundry.identity

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2018-11047, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.cloudfoundry.identity

Analyze the terminal output to locate any version of Cloudfoundry identity server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.7), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.cloudfoundry.identity command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Cloudfoundry identity server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Cloud Foundry UAA, versions 4.19 prior to 4.19.2 and 4.12 prior to 4.12.4 and 4.10 prior to 4.10.2 and 4.7 prior to 4.7.6 and 4.5 prior to 4.5.7, incorrectly authorizes requests to admin endpoints by accepting a valid refresh token in lieu of an access token. Refresh tokens by design have a longer expiration time than access tokens, allowing the possessor of a refresh token to authenticate longer than expected. This affects the administrative endpoints of the UAA. i.e. /Users, /Groups, etc. However, if the user has been deleted or had groups removed, or the client was deleted, the refresh token will no longer be valid.

CVE-2018-11047 Affected Cloudfoundry identity server Versions

5 component(s)
Fixed Versions:
4.5.74.7.64.10.24.12.44.19.2
Product / Package Ecosystem Affected Versions Fixed Version
org.cloudfoundry.identity:cloudfoundry-identity-server
maven/org.cloudfoundry.identity/cloudfoundry-identity-server
Maven
< 4.5.7
4.5.7
org.cloudfoundry.identity:cloudfoundry-identity-server
maven/org.cloudfoundry.identity/cloudfoundry-identity-server
Maven
≥ 4.6.0
< 4.7.6
4.7.6
org.cloudfoundry.identity:cloudfoundry-identity-server
maven/org.cloudfoundry.identity/cloudfoundry-identity-server
Maven
≥ 4.8.0
< 4.10.2
4.10.2
org.cloudfoundry.identity:cloudfoundry-identity-server
maven/org.cloudfoundry.identity/cloudfoundry-identity-server
Maven
≥ 4.11.0
< 4.12.4
4.12.4
org.cloudfoundry.identity:cloudfoundry-identity-server
maven/org.cloudfoundry.identity/cloudfoundry-identity-server
Maven
≥ 4.13.0
< 4.19.2
4.19.2

References

NVD — CVE-2018-11047 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-11047
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/0cd3c6fdd96206a1d6a376ac62e21e59e16cdcb1
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/2906057dae995024576ce6afdc20abd85569514
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/4cb1be404cf4a82e39cf2a6357aa17af8b33f2a1
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/4fa3e351ec0bface3b693810605905e29a9a8569
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/5d021e83ef143c64179d0da015aa76321ee40988
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/81aeb7a3aa048ea086c494f725d643e48dd9266
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/a1d523c7f150e56bf06df8b83ed1d416d6c1d3b
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/aba1fb5f18e0d628628b2d960fc6d0cc62d86f5
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/b37552d2bf084de059bc965b5ef5a45e64883904
Security Fix Commit FIX COMMIT
https://github.com/cloudfoundry/uaa/commit/bbbba5aec514ad88e7d1e168a2519c80229f02f
Cloudfoundry identity server Source Repository REPOSITORY
https://github.com/cloudfoundry/uaa
www.cloudfoundry.org/blog/cve-2018-11047 WEB
https://www.cloudfoundry.org/blog/cve-2018-11047

Frequently Asked Questions

What is CVE-2018-11047?
CVE-2018-11047 is a security vulnerability in Cloudfoundry identity server involving Cloud Foundry UAA accepts refresh token as access token on admin endpoints under CWE-863: Incorrect Authorization.
Which Cloudfoundry identity server versions are affected?
Affected versions include releases prior to 4.5.7, 4.7.6, 4.10.2, 4.12.4, 4.19.2 across affected packages: org.cloudfoundry.identity:cloudfoundry-identity-server.
What version fixes CVE-2018-11047?
Upgrading to 4.5.7, 4.7.6, 4.10.2, 4.12.4, 4.19.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is cloudfoundry-identity-server affected?
Yes, org.cloudfoundry.identity:cloudfoundry-identity-server is affected in releases prior to 4.5.7, 4.7.6, 4.10.2, 4.12.4, 4.19.2. Upgrade your dependency to 4.5.7, 4.7.6, 4.10.2, 4.12.4, 4.19.2 or later.
What is the CVSS score of CVE-2018-11047?
CVE-2018-11047 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2018-11047?
CVE-2018-11047 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2018-11047?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.cloudfoundry.identity'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
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  "id" : "GHSA-r4v8-9hgx-vm6m",
  "modified" : "2024-03-01T23:43:03Z",
  "published" : "2022-05-13T01:49:00Z",
  "aliases" : [ "CVE-2018-11047" ],
  "summary" : "Cloud Foundry UAA accepts refresh token as access token on admin endpoints",
  "details" : "Cloud Foundry UAA, versions 4.19 prior to 4.19.2 and 4.12 prior to 4.12.4 and 4.10 prior to 4.10.2 and 4.7 prior to 4.7.6 and 4.5 prior to 4.5.7, incorrectly authorizes requests to admin endpoints by accepting a valid refresh token in lieu of an access token. Refresh tokens by design have a longer expiration time than access tokens, allowing the possessor of a refresh token to authenticate longer than expected. This affects the administrative endpoints of the UAA. i.e. /Users, /Groups, etc. However, if the user has been deleted or had groups removed, or the client was deleted, the refresh token will no longer be valid.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
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    },
    "ranges" : [ {
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      "events" : [ {
        "introduced" : "4.13.0"
      }, {
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
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    "url" : "https://github.com/cloudfoundry/uaa/commit/0cd3c6fdd96206a1d6a376ac62e21e59e16cdcb1"
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    "type" : "WEB",
    "url" : "https://github.com/cloudfoundry/uaa/commit/2906057dae995024576ce6afdc20abd85569514"
  }, {
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    "url" : "https://github.com/cloudfoundry/uaa/commit/4cb1be404cf4a82e39cf2a6357aa17af8b33f2a1"
  }, {
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    "url" : "https://github.com/cloudfoundry/uaa/commit/5d021e83ef143c64179d0da015aa76321ee40988"
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  }, {
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    "url" : "https://github.com/cloudfoundry/uaa/commit/aba1fb5f18e0d628628b2d960fc6d0cc62d86f5"
  }, {
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    "url" : "https://github.com/cloudfoundry/uaa/commit/b37552d2bf084de059bc965b5ef5a45e64883904"
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  }, {
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    "url" : "https://github.com/cloudfoundry/uaa"
  }, {
    "type" : "WEB",
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  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-01T23:43:02Z",
    "nvd_published_at" : "2018-07-24T19:29:00Z"
  }
}