Auth bypass in Onelogin Pythonsaml
CVE-2017-11427
OneLogin PythonSAML 2.3.0 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
EPSS: 0.047 (90.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Onelogin Pythonsaml — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@duo.com (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)
- security@duo.com (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2017-11427?
- CVE-2017-11427 is a high-severity vulnerability in Onelogin Pythonsaml, classified under Improper Authentication. CVSS score: 7.7/10. Published 2019-04-17.
- How severe is CVE-2017-11427?
- High severity. CVSS v3 base score is 7.7 out of 10.
- Is CVE-2017-11427 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.