CVE-2021-32743
Passwords used to access external services inadvertently exposed through API
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
8.8
Passwords used to access external services inadvertently exposed through API
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
CVE-2021-32743- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-202
- Updated
- 2026-11-02
EUVDEUVD-2021-19515
8.8
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
EUVD-2021-19515- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
8.8
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
CVE-2021-32743- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-202
- Updated
- 2026-11-02
OSV
8.8
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
CVE-2021-32743- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-32743
8.8
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
DEBIAN-CVE-2021-32743- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-32743
8.8
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions prior to 2.11.10 and from version 2.12.0 through version 2.12.4, some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add, modify and delete information there. If credentials with more permissions are in use, this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases, these passwords are no longer exposed via the API. As a workaround, API user permissions can be restricted to not allow querying of any affected objects, either by explicitly listing only the required object types for object query permissions, or by applying a filter rule.
- Record
UBUNTU-CVE-2021-32743- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2021:1089-1 No score
Security update for icinga2
This update for icinga2 fixes the following issues:
icinga2 was updated to 2.12.5:
Version 2.12.5 fixes two security vulnerabilities that may lead to privilege escalation for authenticated API users. Other improvements include several bugfixes related to downtimes, downtime notifications, and more reliable connection handling.
-
Security
-
Don't expose the PKI ticket salt via the API. This may lead to privilege escalation for authenticated API users by them being able to request certificates for other identities (CVE-2021-32739)
-
Don't expose IdoMysqlConnection, IdoPgsqlConnection, and ElasticsearchWriter passwords via the API (CVE-2021-32743)
Depending on your setup, manual intervention beyond installing the new versions may be required, so please read the more detailed information in the release blog post carefully.
-
-
Bugfixes
- Don't send downtime end notification if downtime hasn't started #8878
- Don't let a failed downtime creation block the others #8871
- Support downtimes and comments for checkables with long names #8870
- Trigger fixed downtimes immediately if the current time matches (instead of waiting for the timer) #8891
- Add configurable timeout for full connection handshake #8872
-
Enhancements
- Replace existing downtimes on ScheduledDowntime change #8880
- Improve crashlog #8869
- Record
openSUSE-SU-2021:1089-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10856-1 No score
icinga2-2.13.1-1.3 on GA media
These are all security issues fixed in the icinga2-2.13.1-1.3 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10856-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
icinga2Debian:12 |
before 2.12.5-1 | 2.12.5-1 |
icinga2Debian:13 |
before 2.12.5-1 | 2.12.5-1 |
icinga2Debian:14 |
before 2.12.5-1 | 2.12.5-1 |
icinga2Debian:9 From an advisory covering 3 CVEs |
before 2.6.0-2+deb9u2, plus listed versions 2.6.0-22.6.0-2+deb9u1 |
2.6.0-2+deb9u2 |
icinga2Debian:11 From an advisory covering 4 CVEs |
before 2.12.3-1+deb11u1, plus listed versions 2.12.3-1 |
2.12.3-1+deb11u1 |
icinga2Ubuntu:16.04:LTS |
All versions, plus listed versions 2.3.8-1build12.3.11-12.4.0-12.4.1-12.4.1-22.4.1-2ubuntu1 |
None known |
icinga2Ubuntu:18.04:LTS |
All versions, plus listed versions 2.7.0-12.8.1-0ubuntu2 |
None known |
icinga2Ubuntu:20.04:LTS |
All versions, plus listed versions 2.10.5-1build12.11.2-12.11.2-1ubuntu12.11.2-1ubuntu22.11.2-1ubuntu3 |
None known |
icinga2Ubuntu:22.04:LTS |
All versions, plus listed versions 2.12.3-12.13.1-12.13.2-12.13.2-1build12.13.2-1build2 |
None known |
icinga2Ubuntu:24.04:LTS |
All versions, plus listed versions 2.13.8-12.14.1-12.14.2-12.14.2-1build12.14.2-1build2 |
None known |
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| Package | Affected | Fixed |
|---|---|---|
icinga2Ubuntu:25.10 |
All versions, plus listed versions 2.14.5-12.14.6-12.15.0-1 |
None known |
icinga2Ubuntu:26.10 |
All versions, plus listed versions 2.15.1-12.16.1-12.16.3-12.16.4-1build12.16.5-1 |
None known |
icinga2Ubuntu:26.04:LTS |
All versions, plus listed versions 2.15.0-12.15.1-1 |
None known |
icinga2SUSE:Package Hub 15 SP1 From an advisory covering 3 CVEs |
before 2.12.5-bp153.2.5.1 | 2.12.5-bp153.2.5.1 |
icinga2SUSE:Package Hub 15 SP2 From an advisory covering 3 CVEs |
before 2.12.5-bp153.2.5.1 | 2.12.5-bp153.2.5.1 |
icinga2SUSE:Package Hub 15 SP3 From an advisory covering 3 CVEs |
before 2.12.5-bp153.2.5.1 | 2.12.5-bp153.2.5.1 |
icinga2openSUSE:Leap 15.2 From an advisory covering 3 CVEs |
before 2.12.5-bp153.2.5.1 | 2.12.5-bp153.2.5.1 |
icinga2openSUSE:Leap 15.3 From an advisory covering 3 CVEs |
before 2.12.5-bp153.2.5.1 | 2.12.5-bp153.2.5.1 |
icinga2openSUSE:Tumbleweed From an advisory covering 7 CVEs |
before 2.13.1-1.3 | 2.13.1-1.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-32743 is a high vulnerability (CVSS 8.8) in Icinga, published July 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.80%, the 78th percentile. Fixed in icinga2 2.12.5-1.
References
github.com/Icinga/icinga2/security/advisories/GHSA-wrpw-pmr8-qgj7
icinga.com/blog/2021/07/15/releasing-icinga-2-12-5-and-2-11-10
lists.debian.org/debian-lts-announce/2021/11/msg00010.html
lists.debian.org/debian-lts-announce/2024/11/msg00010.html
security-tracker.debian.org/tracker/CVE-2021-32743
ubuntu.com/security/CVE-2021-32743
Show 9 moreShow less
cve.org/CVERecord?id=CVE-2021-32743
lists.opensuse.org/archives/list/[email protected]/thread/AG46DROWC4ZEVBNIZC5IYVVFYH4FMFCS
suse.com/security/cve/CVE-2020-29663
suse.com/security/cve/CVE-2021-32739
suse.com/security/cve/CVE-2021-32743
suse.com/security/cve/CVE-2017-16933
suse.com/security/cve/CVE-2018-6534
suse.com/security/cve/CVE-2020-14004
suse.com/security/cve/CVE-2021-37698