CVE-2021-32739

{"containers": {"cna": {"affected": [{"product": "icinga2", "vendor": "Icinga", "versions": [{"status": "affected", "version": ">= 2.4.0, <= 2.12.4"}]}], "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-267", "description": "CWE-267: Privilege Defined With Unsafe Actions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-11-10T23:06:12.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5"}, {"tags": ["x_refsource_MISC"], "url": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/"}, {"name": "[debian-lts-announce] 20211110 [SECURITY] [DLA 2816-1] icinga2 security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html"}], "source": {"advisory": "GHSA-98wp-jc6q-x5q5", "discovery": "UNKNOWN"}, "title": "Results of queries for ApiListener objects include the ticket salt which allows in turn to steal (more privileged) identities", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32739", "STATE": "PUBLIC", "TITLE": "Results of queries for ApiListener objects include the ticket salt which allows in turn to steal (more privileged) identities"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "icinga2", "version": {"version_data": [{"version_value": ">= 2.4.0, <= 2.12.4"}]}}]}, "vendor_name": "Icinga"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-267: Privilege Defined With Unsafe Actions"}]}]}, "references": {"reference_data": [{"name": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5", "refsource": "CONFIRM", "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5"}, {"name": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/", "refsource": "MISC", "url": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/"}, {"name": "[debian-lts-announce] 20211110 [SECURITY] [DLA 2816-1] icinga2 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html"}]}, "source": {"advisory": "GHSA-98wp-jc6q-x5q5", "discovery": "UNKNOWN"}}}, "adp": [{"title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/"}, {"name": "[debian-lts-announce] 20211110 [SECURITY] [DLA 2816-1] icinga2 security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:44:44.603Z"}}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32739", "datePublished": "2021-07-15T14:55:11.000Z", "dateReserved": "2021-05-12T00:00:00.000Z", "dateUpdated": "2025-11-03T21:44:44.603Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "icinga2", "vendor": "Icinga", "versions": [{"status": "affected", "version": ">= 2.4.0, <= 2.12.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*", "matchCriteriaId": "F174C03E-CED0-469C-A3E7-7EE760244F7D", "versionEndExcluding": "2.11.10", "versionStartIncluding": "2.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FC541DF-0A24-4C5F-90EF-A7D40EFFDB5D", "versionEndExcluding": "2.12.5", "versionStartIncluding": "2.12.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Icinga es un sistema de monitorizaci\u00f3n que comprueba la disponibilidad de los recursos de red, notifica a usuarios de las interrupciones y genera datos de rendimiento para informes. Desde versi\u00f3n 2.4.0 hasta versi\u00f3n 2.12.4, se presenta una vulnerabilidad que puede permitir una escalada de privilegios para usuarios autenticados de la API. Con las credenciales de un usuario de solo lectura, un atacante puede ver la mayor\u00eda de los atributos de todos los objetos de configuraci\u00f3n, incluyendo \"ticket_salt\" de \"ApiListener\". Este salt es suficiente para calcular un ticket para cada nombre com\u00fan (CN) posible. Un ticket, el certificado del nodo maestro y un certificado autofirmado son suficientes para solicitar con \u00e9xito el certificado deseado de Icinga. Ese certificado puede usarse a su vez para robar la identidad de un endpoint o de un usuario de la API. Las versiones 2.12.5 y 2.11.10 contienen una correcci\u00f3n de la vulnerabilidad. Como soluci\u00f3n, se pueden especificar expl\u00edcitamente los tipos consultables o filtrar los objetos ApiListener"}], "id": "CVE-2021-32739", "lastModified": "2026-06-17T03:53:32.047", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-15T15:15:08.567", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5"}, {"source": "security-advisories@github.com", "tags": ["Broken Link", "Vendor Advisory"], "url": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Vendor Advisory"], "url": "https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-267"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-269"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}