CVE-2022-23635 (GCVE-0-2022-23635)
Vulnerability from cvelistv5 – Published: 2022-02-22 22:00 – Updated: 2025-04-23 19:02
VLAI?
Title
Unauthenticated control plane denial of service attack in Istio
Summary
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.
Severity ?
7.5 (High)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T03:51:45.891Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://istio.io/latest/news/security/istio-security-2022-003"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-23635",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T15:57:30.373660Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-23T19:02:00.579Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "istio",
"vendor": "istio",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.13.0, \u003c 1.13.1"
},
{
"status": "affected",
"version": "\u003e= 1.12.0, \u003c 1.12.4"
},
{
"status": "affected",
"version": "\u003c 1.11.7"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287: Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-02-22T22:00:13.000Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://istio.io/latest/news/security/istio-security-2022-003"
}
],
"source": {
"advisory": "GHSA-856q-xv3c-7f2f",
"discovery": "UNKNOWN"
},
"title": "Unauthenticated control plane denial of service attack in Istio",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2022-23635",
"STATE": "PUBLIC",
"TITLE": "Unauthenticated control plane denial of service attack in Istio"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "istio",
"version": {
"version_data": [
{
"version_value": "\u003e= 1.13.0, \u003c 1.13.1"
},
{
"version_value": "\u003e= 1.12.0, \u003c 1.12.4"
},
{
"version_value": "\u003c 1.11.7"
}
]
}
}
]
},
"vendor_name": "istio"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-287: Improper Authentication"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f",
"refsource": "CONFIRM",
"url": "https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f"
},
{
"name": "https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84",
"refsource": "MISC",
"url": "https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84"
},
{
"name": "https://istio.io/latest/news/security/istio-security-2022-003",
"refsource": "MISC",
"url": "https://istio.io/latest/news/security/istio-security-2022-003"
}
]
},
"source": {
"advisory": "GHSA-856q-xv3c-7f2f",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2022-23635",
"datePublished": "2022-02-22T22:00:13.000Z",
"dateReserved": "2022-01-19T00:00:00.000Z",
"dateUpdated": "2025-04-23T19:02:00.579Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"cna\": {\"affected\": [{\"product\": \"istio\", \"vendor\": \"istio\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 1.13.0, \u003c 1.13.1\"}, {\"status\": \"affected\", \"version\": \"\u003e= 1.12.0, \u003c 1.12.4\"}, {\"status\": \"affected\", \"version\": \"\u003c 1.11.7\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.\"}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"version\": \"3.1\"}}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-287\", \"description\": \"CWE-287: Improper Authentication\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2022-02-22T22:00:13.000Z\", \"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\"}, \"references\": [{\"tags\": [\"x_refsource_CONFIRM\"], \"url\": \"https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://istio.io/latest/news/security/istio-security-2022-003\"}], \"source\": {\"advisory\": \"GHSA-856q-xv3c-7f2f\", \"discovery\": \"UNKNOWN\"}, \"title\": \"Unauthenticated control plane denial of service attack in Istio\", \"x_legacyV4Record\": {\"CVE_data_meta\": {\"ASSIGNER\": \"security-advisories@github.com\", \"ID\": \"CVE-2022-23635\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Unauthenticated control plane denial of service attack in Istio\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"product_name\": \"istio\", \"version\": {\"version_data\": [{\"version_value\": \"\u003e= 1.13.0, \u003c 1.13.1\"}, {\"version_value\": \"\u003e= 1.12.0, \u003c 1.12.4\"}, {\"version_value\": \"\u003c 1.11.7\"}]}}]}, \"vendor_name\": \"istio\"}]}}, \"data_format\": \"MITRE\", \"data_type\": \"CVE\", \"data_version\": \"4.0\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.\"}]}, \"impact\": {\"cvss\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"version\": \"3.1\"}}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-287: Improper Authentication\"}]}]}, \"references\": {\"reference_data\": [{\"name\": \"https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f\", \"refsource\": \"CONFIRM\", \"url\": \"https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f\"}, {\"name\": \"https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84\", \"refsource\": \"MISC\", \"url\": \"https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84\"}, {\"name\": \"https://istio.io/latest/news/security/istio-security-2022-003\", \"refsource\": \"MISC\", \"url\": \"https://istio.io/latest/news/security/istio-security-2022-003\"}]}, \"source\": {\"advisory\": \"GHSA-856q-xv3c-7f2f\", \"discovery\": \"UNKNOWN\"}}}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T03:51:45.891Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"], \"url\": \"https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://istio.io/latest/news/security/istio-security-2022-003\"}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-23635\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-23T15:57:30.373660Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-23T15:57:31.605Z\"}}]}",
"cveMetadata": "{\"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"assignerShortName\": \"GitHub_M\", \"cveId\": \"CVE-2022-23635\", \"datePublished\": \"2022-02-22T22:00:13.000Z\", \"dateReserved\": \"2022-01-19T00:00:00.000Z\", \"dateUpdated\": \"2025-04-23T19:02:00.579Z\", \"state\": \"PUBLISHED\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…