Description
Sensitive data could be exposed in logs of cloud-init before version 23.1.2. An attacker could use this information to find hashed passwords and possibly escalate their privilege.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | cloud-init | < 23.1.2 | 23.1.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | cloud-init | 23.2-1 | — |
| Debian 13 | cloud-init | 23.2-1 | — |
| Debian 12 | cloud-init | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | cloud-init | 23.1.2-0ubuntu0~22.04.1 | USN-6042-1 |
| Ubuntu 20.04 LTS | cloud-init | 23.1.2-0ubuntu0~20.04.1 | USN-6042-1 |
| Ubuntu 18.04 LTS | cloud-init | 23.1.2-0ubuntu0~18.04.1 | USN-6042-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | cloud-init | 21.1-19-gbad84ad4-0ubuntu1~16.04.4 | USN-6042-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | cloud-init | 23.1.1-11.el9 | RHSA-2023:6371 |
| RHEL 8 | cloud-init | 23.1.1-10.el8 | RHSA-2023:6943 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | cloud-init | 23.1.1-11.el9.alma.1 | ALSA-2023:6371 |
| AlmaLinux 8 | cloud-init | 23.1.1-10.el8.alma.1 | ALSA-2023:6943 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
| SLES 15 SP4 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
| SLES 15 SP3 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
| SLES 15 SP2 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
| SLES 15 SP1 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | cloud-init | 20.2-37.57.1 | SUSE-SU-2023:2164-1 |
| SLE Micro 6.1 | cloud-init | 25.1.3-slfo.1.1_1.1 | SUSE-SU-2025:20755-1 |
| SLE Micro 6.0 | cloud-init | 25.1.3-1.1 | SUSE-SU-2025:20656-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | cloud-init | 23.1-2.1 | openSUSE-SU-2024:13053-1 |
| openSUSE Leap 15.5 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
| openSUSE Leap 15.4 | cloud-init | 23.1-150100.8.63.5 | SUSE-SU-2024:0128-1, SUSE-SU-2023:2628-1, SUSE-FU-2023:3283-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | cloud-init | 23.1.2-r0 | — |
| Alpine v3.23 | cloud-init | 23.1.2-r0 | — |
| Alpine v3.22 | cloud-init | 23.1.2-r0 | — |
| Alpine v3.21 | cloud-init | 23.1.2-r0 | — |
| Alpine v3.20 | cloud-init | 23.1.2-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | cloud-init | 23.1.2-r0 | — |
| Alpine v3.18 | cloud-init | 23.1.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | cloud-init | 22.2.2-1.amzn2023.1.8 | ALAS2023-2023-196 |
| Amazon Linux 2 | cloud-init | 19.3-46.amzn2.0.3 | ALAS2-2024-2701 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | cloud-init | 22.4-3 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | cloud-init | 22.1-7.0.3.el9_1 | ELSA-2023-12299, ELSA-2023-6371 |
| Oracle Linux 8 | cloud-init | 22.1-6.0.4.el8_7.2 | ELSA-2023-12298, ELSA-2023-6943 |
Advisories 20
- WID-SEC-2023-2853 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- ALSA-2023:6371 Moderate: cloud-init security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:6943 Moderate: cloud-init security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:6943 Red Hat Security Advisory: cloud-init security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 4, 2026
- RHSA-2023:6371 Red Hat Security Advisory: cloud-init security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 4, 2026
- USN-6042-1 cloud-init vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- SUSE-SU-2025:20755-1 Security update for cloud-init SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20656-1 Security update for cloud-init SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2023:2628-1 Security update for cloud-init SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13053-1 cloud-init-23.1-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0128-1 Security update for cloud-init SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-FU-2023:3283-1 Feature update for cloud-init SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2164-1 Security update for cloud-init SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- ALAS2-2024-2701 Moderate: cloud-init security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 15, 2024
- ELSA-2023-6943 Moderate: cloud-init security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 17, 2023
- ELSA-2023-6371 Moderate: cloud-init security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ALAS2023-2023-196 Moderate: cloud-init security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 7, 2023
- ELSA-2023-12299 Important: cloud-init security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 27, 2023
- ELSA-2023-12298 Important: cloud-init security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 27, 2023
References
- https://github.com/canonical/cloud-init/commit/a378b7e4f47375458651c0972e7cd813f6fe0a6b patch
- https://bugs.launchpad.net/cloud-init/+bug/2013967 issue-tracking
- https://ubuntu.com/security/notices/USN-6042-1 vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ATBJSXPL2IOAD2LDQRKWPLIC7QXS44GZ/