Open Redirect Affecting mod_auth_mellon-diagnostics package, versions <0:0.14.0-12.el8.1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.03% (64th percentile)

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  • Snyk IDSNYK-RHEL8-MODAUTHMELLONDIAGNOSTICS-4250358
  • published30 Jul 2021
  • disclosed29 Jul 2021

Introduced: 29 Jul 2021

CVE-2021-3639  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade RHEL:8 mod_auth_mellon-diagnostics to version 0:0.14.0-12.el8.1 or higher.
This issue was patched in RHSA-2022:1934.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_auth_mellon-diagnostics package and not the mod_auth_mellon-diagnostics package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity.

CVSS Base Scores

version 3.1