Executive Summary

Title libapache2-mod-auth-mellon security update
Name DSA-4414 First vendor Publication 2019-03-23
Vendor Debian Last vendor Modification 2019-03-23
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores


Several issues have been discovered in Apache module auth_mellon, which provides SAML 2.0 authentication.


It was possible to bypass the redirect URL checking on logout, so the module could be used as an open redirect facility.


When mod_auth_mellon is used in an Apache configuration which serves as a remote proxy with the http_proxy module, it was possible to bypass authentication by sending SAML ECP headers.

For the stable distribution (stretch), these problems have been fixed in version 0.12.0-2+deb9u1.

We recommend that you upgrade your libapache2-mod-auth-mellon packages.

For the detailed security status of libapache2-mod-auth-mellon please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libapache2-mod-auth-mellon

Original Source

Url : http://www.debian.org/security/2019/dsa-4414

Alert History

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Date Informations
2019-03-23 21:18:22
  • First insertion