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CVE-2016-10127: PySAML2 XML external entity attack

May 17, 2022 (updated October 24, 2024)

PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.

References

  • bugs.debian.org/cgi-bin/bugreport.cgi?bug=850716
  • github.com/advisories/GHSA-m269-wj6g-c459
  • github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2017-67.yaml
  • github.com/rohe/pysaml2
  • github.com/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b
  • github.com/rohe/pysaml2/issues/366
  • github.com/rohe/pysaml2/pull/379
  • nvd.nist.gov/vuln/detail/CVE-2016-10127
  • web.archive.org/web/20200227195127/http://www.securityfocus.com/bid/95376

Code Behaviors & Features

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Affected versions

All versions before 4.5.0

Fixed versions

  • 4.5.0

Solution

Upgrade to version 4.5.0 or above.

Impact 9 CRITICAL

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-611: Improper Restriction of XML External Entity Reference

Source file

pypi/pysaml2/CVE-2016-10127.yml

Spotted a mistake? Edit the file on GitLab.

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