==========================================================================
Ubuntu Security Notice USN-6489-1
November 20, 2023

tang vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Tang could allow unintended access to secret keys.

Software Description:
- tang: network-based cryptographic binding server

Details:

Brian McDermott discovered that Tang incorrectly handled permissions when
creating/rotating keys. A local attacker could possibly use this issue to
read the keys.

Update instructions:

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

Ubuntu 23.04:
   tang-common                     11-2ubuntu0.1

Ubuntu 22.04 LTS:
   tang-common                     11-1ubuntu0.1

Ubuntu 20.04 LTS:
   tang                            7-1ubuntu0.2

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   tang                            6-1ubuntu0.1~esm1

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

References:
   https://ubuntu.com/security/notices/USN-6489-1
   CVE-2023-1672

Package Information:
   https://launchpad.net/ubuntu/+source/tang/11-2ubuntu0.1
   https://launchpad.net/ubuntu/+source/tang/11-1ubuntu0.1
   https://launchpad.net/ubuntu/+source/tang/7-1ubuntu0.2

Ubuntu 6489-1: Tang vulnerability

November 20, 2023
Tang could allow unintended access to secret keys.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS (Available with Ubuntu Pro) Summary: Tang could allow unintended access to secret keys. Software Description: - tang: network-based cryptographic binding server Details: Brian McDermott discovered that Tang incorrectly handled permissions when creating/rotating keys. A local attacker could possibly use this issue to read the keys.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04:   tang-common                     11-2ubuntu0.1 Ubuntu 22.04 LTS:   tang-common                     11-1ubuntu0.1 Ubuntu 20.04 LTS:   tang                            7-1ubuntu0.2 Ubuntu 18.04 LTS (Available with Ubuntu Pro):   tang                            6-1ubuntu0.1~esm1 In general, a standard system update will make all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-6489-1

  CVE-2023-1672

Severity
Ubuntu Security Notice USN-6489-1

Package Information

  https://launchpad.net/ubuntu/+source/tang/11-2ubuntu0.1   https://launchpad.net/ubuntu/+source/tang/11-1ubuntu0.1   https://launchpad.net/ubuntu/+source/tang/7-1ubuntu0.2

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