Use of Insufficiently Random Values in Apereo CAS
Multiple classes used within Apereo CAS before release 6.1.0-RC5 makes use of apache commons-lang3 RandomStringUtils for token and ID generation which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-core-services-api | < 6.1.0-RC5 | 6.1.0-RC5 |
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-core-services-authentication | < 6.1.0-RC5 | 6.1.0-RC5 |
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-support-oauth-core-api | < 6.1.0-RC5 | 6.1.0-RC5 |
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-support-oidc | < 6.1.0-RC5 | 6.1.0-RC5 |
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-support-shell | < 6.1.0-RC5 | 6.1.0-RC5 |
| Java / Kotlin (Maven) | org.apereo.cas:cas-server-support-simple-mfa | < 6.1.0-RC5 | 6.1.0-RC5 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-10754
- https://github.com/apereo/cas/commit/40bf278e66786544411c471de5123e7a71826b9f
- https://github.com/apereo/cas
- https://snyk.io/vuln/SNYK-JAVA-ORGAPEREOCAS-467402
- https://snyk.io/vuln/SNYK-JAVA-ORGAPEREOCAS-467404
- https://snyk.io/vuln/SNYK-JAVA-ORGAPEREOCAS-467406
- https://snyk.io/vuln/SNYK-JAVA-ORGAPEREOCAS-468868
- https://snyk.io/vuln/SNYK-JAVA-ORGAPEREOCAS-468869
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-330, CWE-338- Platform
- Java / Kotlin (Maven)
- Package
org.apereo.cas:cas-server-core-services-api, org.apereo.cas:cas-server-core-services-authentication, org.apereo.cas:cas-server-support-oauth-core-api- Disclosed
- 24.05.2022
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-g24w-373r-5pxg - CC BY 4.0
Vulnerability history: org.apereo.cas:cas-server-support-oidc
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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