Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade zmartzone/mod_auth_openidc
to version 2.4.15.2 or higher.
Affected versions of this package are vulnerable to Resource Exhaustion due to missing input validation in the mod_auth_openidc_session_chunks
cookie value. An attacker can cause the application or system to slow down or crash by crafting a request that leads to unhandled errors.
Note: Proof of concept:
Open the application URL in the browser
Sign in using correct credentials
While using the application in signed in mode, open chrome dev tools and modify content of cookie mod_auth_openidc_session_chunks
and set it to 99999999 and refresh the page
Apache + mod_auth_openidc will take some time, then return a 500