CVE-2023-7090: Sudo: improper handling of ipa_hostname leads to privilege mismanagement

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-23 · updated 2026-06-17
Weakness: CWE-269

Description

A flaw was found in sudo in the handling of ipa_hostname, where ipa_hostname from /etc/sssd/sssd.conf was not propagated in sudo. Therefore, it leads to privilege mismanagement vulnerability in applications, where client hosts retain privileges even after retracting them.

Affected products

sudo: before 1.8.28 — fixed in 1.8.28

How to fix

Upgrade to a fixed version: sudo 1.8.28. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2023-7090
https://bugzilla.redhat.com/show_bug.cgi?id=2255723
https://lists.debian.org/debian-lts-announce/2024/02/msg00002.html
https://security.netapp.com/advisory/ntap-20240208-0001/
https://www.sudo.ws/releases/legacy/#1.8.28
https://access.redhat.com/security/cve/CVE-2023-7090
https://bugzilla.redhat.com/show_bug.cgi?id=2255723
https://lists.debian.org/debian-lts-announce/2024/02/msg00002.html
https://security.netapp.com/advisory/ntap-20240208-0001/
https://www.sudo.ws/releases/legacy/#1.8.28

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