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==========================================================================
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
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