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Improper Authentication Affecting mod_auth_mellon package, versions <0:0.14.0-2.amzn2.4

Severity

 Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.97% (87th percentile)

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  • Snyk IDSNYK-AMZN2-MODAUTHMELLON-1670027
  • published27 Sept 2021
  • disclosed26 Mar 2019
Report a new vulnerability Found a mistake?

Introduced: 26 Mar 2019

CVE-2019-3878  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 mod_auth_mellon to version 0:0.14.0-2.amzn2.4 or higher.
This issue was patched in ALAS2-2019-1200.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_auth_mellon package and not the mod_auth_mellon package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.

References