Auth bypass in Cisco Duo Network Gateway
CVE-2018-7340
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Cisco Duo Network Gateway
- Duo Security Network Gateway — versions unspecified
Weakness classification (CWE)
References
- duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations (Exploit, Vendor Advisory)
- www.kb.cert.org/vuls/id/475445 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-7340?
- CVE-2018-7340 is a high-severity vulnerability in Cisco Duo Network Gateway, classified under Improper Authentication. CVSS score: 7.5/10. Published 2019-04-17.
- How severe is CVE-2018-7340?
- High severity. CVSS v3 base score is 7.5 out of 10.