9.8

CVE-2017-11427: onelogin pythonsaml Improper Authentication

CVSS: 9.8v3.0CriticalModified
AliasesSUSE-SU-2021:0048-1GHSA-j8j8-348v-wfm3PYSEC-2019-198
Published 17-04-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-11427 is a critical (CVSS 9.8) Improper Authentication vulnerability in onelogin pythonsaml. EPSS estimates a 4.70% chance of exploitation in the next 30 days, higher than 91.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
4.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 17-04-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

4.70%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.70% on 20-09-2026

20-09-202620-10-2026
EPSS score
4.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (duo.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Suse6 products
  • python-defusedxml&distro=SUSE Enterprise Storage 6< 0.6.0-1.5.1
  • python-freezegun&distro=SUSE Enterprise Storage 6< 0.3.12-1.5.1
  • python-isodate&distro=SUSE Enterprise Storage 6< 0.6.0-1.3.2
  • python-pkgconfig&distro=SUSE Enterprise Storage 6< 1.5.1-1.5.1
  • python-python3-saml&distro=SUSE Enterprise Storage 6< 1.9.0-1.5.2
Onelogin1 product
Opensuse1 product
  • python-python3-saml&distro=openSUSE Tumbleweed< 1.15.0-2.3 | < 1.16.0-2.4
PyPI1 product
  • python-saml< 2.4.0

4 vendors · 9 products

References

12 links
Show all 12 references