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CVE-2018-7340

7.5 · HIGH

Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data witho…

Published Apr 17, 2019CWE-287EPSS 0.94%

Overview

CVE-2018-7340 is a high-severity vulnerability. It was published on April 17, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refduo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsRefwww.kb.cert.org/vuls/id/475445Refduo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsRefwww.kb.cert.org/vuls/id/475445

How CyberStrike helps

Frequently asked questions

What is CVE-2018-7340?

CVE-2018-7340 is a high-severity vulnerability. It was published on April 17, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2018-7340?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-7340?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-7340?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-7340 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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