GHSA-xf62-wr5p-5p95
Apache CXF OAuth2 HTTP Response Splitting via WWW-Authenticate Realm Injection
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.apache.cxf:cxf-rt-rs-security-oauth2 | >= 4.2.0, < 4.2.2 | 4.2.2 |
| Maven | org.apache.cxf:cxf-rt-rs-security-oauth2 | < 4.1.7 | 4.1.7 |
Details
As written in the advisory (Markdown source, shown as plain text).
A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the 'realm' parameter is concatenated without sanitizing Carriage Return (CR) and Line Feed (LF) characters. If an attacker can control the realm value, they can inject arbitrary HTTP headers or split the HTTP response entirely. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.
References
External links from the advisory. They lead to third-party sites.