CVE-2019-3465 : What You Need to Know

XmlSecLibs, including SimpleSAMLphp, prior to v3.0.3, have a flaw in the validation of cryptographic signatures in XML messages, allowing attackers to impersonate others or gain higher privileges.

Understanding CVE-2019-3465

XmlSecLibs vulnerability impacting versions prior to 3.0.3 with improper cryptographic signature validation.

What is CVE-2019-3465?

XmlSecLibs, used by SimpleSAMLphp, incorrectly validates cryptographic signatures in XML messages.
Authenticated attackers can exploit this to impersonate users or elevate privileges.

The Impact of CVE-2019-3465

Attackers can manipulate XML messages to impersonate others or gain unauthorized access.

Technical Details of CVE-2019-3465

XmlSecLibs vulnerability details and affected systems.

Vulnerability Description

XmlSecLibs versions prior to 3.0.3 perform incorrect validation of cryptographic signatures in XML messages.

Affected Systems and Versions

Product: Rob Richards XmlSecLibs
Versions: All versions before 3.0.3

Exploitation Mechanism

Authenticated attackers can exploit the flaw by crafting malicious XML messages.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-3465.

Immediate Steps to Take

Update XmlSecLibs to version 3.0.3 or later.
Monitor XML message validation for any suspicious activity.

Long-Term Security Practices

Regularly review and update cryptographic signature validation mechanisms.
Implement strict XML message validation processes.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.