Medium: mod_auth_mellon

Issue Overview:

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. (CVE-2021-3639)

Affected Packages:

mod_auth_mellon

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update mod_auth_mellon to update your system.

New Packages:

aarch64:  
    mod_auth_mellon-0.14.0-9.amzn2.0.1.aarch64  
    mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.aarch64  
    mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.aarch64  
  
i686:  
    mod_auth_mellon-0.14.0-9.amzn2.0.1.i686  
    mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.i686  
    mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.i686  
  
src:  
    mod_auth_mellon-0.14.0-9.amzn2.0.1.src  
  
x86_64:  
    mod_auth_mellon-0.14.0-9.amzn2.0.1.x86_64  
    mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.x86_64  
    mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2021-3639

Mitre: CVE-2021-3639