Ubuntu 5066-2: PySAML2 vulnerability | LinuxSecurity.com

Advisories

==========================================================================
Ubuntu Security Notice USN-5066-2
September 08, 2021

python-pysaml2 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

PySAML2 could be made to accept invalid SAML documents.

Software Description:
- python-pysaml2: Pure python implementation of SAML2

Details:

USN-5066-1 fixed a vulnerability in PySAML2. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

 Brian Wolff discovered that PySAML2 incorrectly validated cryptographic
 signatures. A remote attacker could possibly use this issue to alter SAML
 documents.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 ESM:
  python-pysaml2                  3.0.0-3ubuntu1.16.04.4+esm1
  python3-pysaml2                 3.0.0-3ubuntu1.16.04.4+esm1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5066-2
  https://ubuntu.com/security/notices/USN-5066-1
  CVE-2021-21239

Ubuntu 5066-2: PySAML2 vulnerability

September 8, 2021

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: PySAML2 could be made to accept invalid SAML documents. Software Description: - python-pysaml2: Pure python implementation of SAML2 Details: USN-5066-1 fixed a vulnerability in PySAML2. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details: Brian Wolff discovered that PySAML2 incorrectly validated cryptographic signatures. A remote attacker could possibly use this issue to alter SAML documents.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: python-pysaml2 3.0.0-3ubuntu1.16.04.4+esm1 python3-pysaml2 3.0.0-3ubuntu1.16.04.4+esm1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5066-2

https://ubuntu.com/security/notices/USN-5066-1

CVE-2021-21239

Severity
Ubuntu Security Notice USN-5066-2

Package Information

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