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CVE-2023-1672

Publication date 11 July 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

A race condition exists in the Tang server functionality for key generation and key rotation. This flaw results in a small time window where Tang private keys become readable by other processes on the same host.

Read the notes from the security team

Status

Package Ubuntu Release Status
tang 23.10 mantic
Not affected
23.04 lunar
Fixed 11-2ubuntu0.1
22.10 kinetic Ignored end of life, was needed
22.04 LTS jammy
Fixed 11-1ubuntu0.1
20.04 LTS focal
Fixed 7-1ubuntu0.2
18.04 LTS bionic
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support

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Notes

alexmurray

For tang 6 and 7 in bionic and focal respectively, the code from src/keys.c and src/tangd-rotate-keys.in is not present, however there is an equivalent src/tangd-keygen script which looks like it needs to be updated to set the umask correctly

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
tang

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N