CVE-2023-1672: Race condition exists in the key generation and rotation functionality

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-07-11 · updated 2026-06-17
Weakness: CWE-362

Description

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.

Affected products

Fedoraproject Fedora: 38
Red Hat Enterprise Linux: 8.0, 9.0
tang: before 14 — fixed in 14

How to fix

Upgrade to a fixed version: tang 14. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2023-1672
https://bugzilla.redhat.com/show_bug.cgi?id=2180999
https://github.com/latchset/tang/commit/8dbbed10870378f1b2c3cf3df2ea7edca7617096
https://lists.debian.org/debian-lts-announce/2023/11/msg00004.html
https://www.openwall.com/lists/oss-security/2023/06/15/1
https://access.redhat.com/security/cve/CVE-2023-1672
https://bugzilla.redhat.com/show_bug.cgi?id=2180999
https://github.com/latchset/tang/commit/8dbbed10870378f1b2c3cf3df2ea7edca7617096
https://lists.debian.org/debian-lts-announce/2023/11/msg00004.html
https://www.openwall.com/lists/oss-security/2023/06/15/1

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