CVE catalog
CVE-2021-32739
icinga2: CVE-2021-32739
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.14% · Oct 25, 2026
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. From version 2.4.0 through version 2.12.4, a vulnerability exists that may allow privilege escalation for authenticated API users. With a read-ony user's credentials, an attacker can view most attributes of all config objects including `ticket_salt` of `ApiListener`. This salt is enough to compute a ticket for every possible common name (CN). A ticket, the master node's certificate, and a self-signed certificate are enough to successfully request the desired certificate from Icinga. That certificate may in turn be used to steal an endpoint or API user's identity. Versions 2.12.5 and 2.11.10 both contain a fix the vulnerability. As a workaround, one may either specify queryable types explicitly or filter out ApiListener objects.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | icinga2 | sid | 2.16.5-1 | fixed |
| Debian | icinga2 | forky | 2.16.5-1 | fixed |
| Debian | icinga2 | trixie | 2.14.6-1 | fixed |
| Debian | icinga2 | trixie-security | 2.14.6-1+deb13u1 | fixed |
| Debian | icinga2 | bookworm | 2.13.6-2+deb12u2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | icinga2 | source | sid | 2.12.5-1 | not yet assigned | Not reported | [991494] |
| Debian | icinga2 | source | forky | 2.12.5-1 | not yet assigned | Not reported | [991494] |
| Debian | icinga2 | source | trixie | 2.12.5-1 | not yet assigned | Not reported | [991494] |
| Debian | icinga2 | source | bookworm | 2.12.5-1 | not yet assigned | Not reported | [991494] |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [icinga2]Unknown
Details (2)
2.13.6-2+deb12u2· amd64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· arm64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [icinga2-bin]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· amd64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· arm64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [icinga2-common]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [icinga2-doc]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [icinga2-ido-mysql]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· amd64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· arm64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [icinga2-ido-pgsql]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· amd64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· arm64 · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
- [vim-icinga2]Unknown
Source package: [icinga2]
Details (2)
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
2.13.6-2+deb12u2· all · bookwormFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · bookworm; dsa · icinga2 · debian · 12
[Debian 13 (Trixie)]
- [icinga2]Unknown
Details (4)
2.14.6-1· amd64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· arm64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [icinga2-bin]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· amd64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· arm64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [icinga2-common]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [icinga2-doc]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [icinga2-ido-mysql]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· amd64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· arm64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [icinga2-ido-pgsql]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· amd64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· arm64 · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
- [vim-icinga2]Unknown
Source package: [icinga2]
Details (4)
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1· all · trixieFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
2.14.6-1+deb13u1· all · trixie-securityFixed · Fixed:
2.12.5-1dsa · icinga2 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2021_1089-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-32739]
- [https://osv.dev/vulnerability/DLA-2816-1]
- [https://osv.dev/vulnerability/DLA-3953-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-32739]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2024-3477.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]