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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| io.undertow:undertow-core | maven | < 2.2.32.Final | 2.2.32.Final |
| io.undertow:undertow-core | maven | >= 2.3.0.Alpha1, < 2.3.13.Final | 2.3.13.Final |
The vulnerability stems from how sessions were created and managed during form authentication. The patch adds session timeout constraints (2 minutes) for newly created authentication sessions and restores original timeouts post-authentication. The original storeInitialLocation functions in both classes created sessions with default configurations, enabling attackers to trigger OOM errors by creating excessive sessions. The commit diff clearly shows these functions were modified to add session timeout controls, confirming their role in the vulnerability.
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