CVE-2018-1260: Remote Code Execution with spring-security-oauth2

Severity

Critical

Vendor

Spring by Pivotal

Description

Spring Security OAuth, versions 2.3 prior to 2.3.3 and 2.2 prior to 2.2.2 and 2.1 prior to 2.1.2 and 2.0 prior to 2.0.15 and older unsupported versions, contains a remote code execution vulnerability. A malicious user or attacker can craft an authorization request to the authorization endpoint that can lead to a remote code execution when the resource owner is forwarded to the approval endpoint.

This vulnerability exposes applications that meet all of the following requirements:

Act in the role of an Authorization Server (e.g. @EnableAuthorizationServer)
Use the default Approval Endpoint

This vulnerability does not expose applications that:

Act in the role of an Authorization Server but override the default Approval Endpoint
Act in the role of a Resource Server only (e.g. @EnableResourceServer)
Act in the role of a Client only (e.g. @EnableOAuthClient)

Affected Pivotal Products and Versions

Severity is critical unless otherwise noted.

Spring Security OAuth 2.3 to 2.3.2
Spring Security OAuth 2.2 to 2.2.1
Spring Security OAuth 2.1 to 2.1.1
Spring Security OAuth 2.0 to 2.0.14
Older unsupported versions are also affected

Mitigation

Users of affected versions should apply the following mitigation:

2.3.x users should upgrade to 2.3.3
2.2.x users should upgrade to 2.2.2
2.1.x users should upgrade to 2.1.2
2.0.x users should upgrade to 2.0.15
Older versions should upgrade to a supported branch

There are no other mitigation steps required.

Credit

This issue was identified and responsibly reported by Philippe Arteau from GoSecure.

References

Spring Security OAuth documentation, see section "Authorization Server Configuration"
Example configuration for @EnableAuthorizationServer

History

2018-05-09: Initial vulnerability report published