QID 671018

Date Published: 2021-11-24

QID 671018: EulerOS Security Update for mod_auth_mellon (EulerOS-SA-2021-2597)

The mod_auth_mellon module is an authentication service that implements the SAML 2.0 federation protocol. It grants access based on the attributes received in assertions generated by a IdP server. Security Fix(es): 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)
Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.

  • CVSS V3 rated as Medium - 4.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    The Vendor has released a security update to fix the vulnerability. For more information please visit EulerOS-SA-2021-2597 for updates and patch information
    Vendor References

    CVEs related to QID 671018

    CVE-2021-3639 |
    Software Advisories
    Advisory ID Software Component Link
    EulerOS-SA-2021-2597 EulerOS V2.0SP3 URL Logo developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2597
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