Description
Spring Security OAuth, versions 2.3 prior to 2.3.5, and 2.2 prior to 2.2.4, and 2.1 prior to 2.1.4, and 2.0 prior to 2.0.17, and older unsupported versions could be susceptible to an open redirector attack that can leak an authorization code. A malicious user or attacker can craft a request to the authorization endpoint using the authorization code grant type, and specify a manipulated redirection URI via the "redirect_uri" parameter. This can cause the authorization server to redirect the resource owner user-agent to a URI under the control of the attacker with the leaked authorization code. This vulnerability exposes applications that meet all of the following requirements: Act in the role of an Authorization Server (e.g. @EnableAuthorizationServer) and uses the DefaultRedirectResolver in the AuthorizationEndpoint. This vulnerability does not expose applications that: Act in the role of an Authorization Server and uses a different RedirectResolver implementation other than DefaultRedirectResolver, act in the role of a Resource Server only (e.g. @EnableResourceServer), act in the role of a Client only (e.g. @EnableOAuthClient).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Spring | Spring Security OAuth | 2.3 – < 2.3.5.RELEASE, 2.0 – < 2.0.17.RELEASE, 2.1 – < 2.1.4.RELEASE, 2.2 – < 2.2.4.RELEASE | 2.3.5.RELEASE |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Spring Security OAuth - Open Redirector EDB-47000 · webapps · Jun 17, 2019
GitHub 1 repository
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BBB-man/CVE-2019-3778-Spring-Security-OAuth-2.3-Open-Redirection ★ 0 · Oct 14, 2019
Spring Security OAuth 2.3 Open Redirection 分析复现篇
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.