Description
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions 2.5.0 through 2.13.0, ElasticsearchWriter, GelfWriter, InfluxdbWriter and Influxdb2Writer do not verify the server's certificate despite a certificate authority being specified. Icinga 2 instances which connect to any of the mentioned time series databases (TSDBs) using TLS over a spoofable infrastructure should immediately upgrade to version 2.13.1, 2.12.6, or 2.11.11 to patch the issue. Such instances should also change the credentials (if any) used by the TSDB writer feature to authenticate against the TSDB. There are no workarounds aside from upgrading.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Icinga | icinga2 | >= 2.5.0, <= 2.13.0 | — |
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 | icinga2 | 2.13.1-1 | — |
| Debian 13 | icinga2 | 2.13.1-1 | — |
| Debian 12 | icinga2 | 2.13.1-1 | — |
| Debian 11 | icinga2 | 2.12.3-1+deb11u1 | DLA-3953-1 |
| Debian 9 | icinga2 | 2.6.0-2+deb9u2 | DLA-2816-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 20.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 18.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 16.04 LTS | icinga2 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | icinga2 | 2.8.2-3.6.1 | SUSE-SU-2022:3725-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | icinga2 | 2.13.1-1.3 | openSUSE-SU-2024:10856-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.23 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.22 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.21 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.20 | icinga2 | 2.13.1-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.18 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.17 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.16 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.15 | icinga2 | 2.13.1-r0 | — |
| Alpine v3.14 | icinga2 | 2.12.6-r0 | — |
Advisories 5
- DLA-3953-1 icinga2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2816-1 icinga2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10856-1 icinga2-2.13.1-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3725-1 Security update for icinga2 SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-1851 Icinga: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Dec 8, 2024
References
- https://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2
- https://github.com/Icinga/icinga2/releases/tag/v2.11.11
- https://github.com/Icinga/icinga2/releases/tag/v2.12.6
- https://github.com/Icinga/icinga2/releases/tag/v2.13.1
- [debian-lts-announce] 20211110 [SECURITY] [DLA 2816-1] icinga2 security update mailing-list