GSD-2022-23632
Vulnerability from gsd - Updated: 2023-12-13 01:19Details
Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-23632",
"description": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
"id": "GSD-2022-23632",
"references": [
"https://www.suse.com/security/cve/CVE-2022-23632.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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"details": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
"id": "GSD-2022-23632",
"modified": "2023-12-13T01:19:35.030354Z",
"schema_version": "1.4.0"
}
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"baseScore": 7.4,
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"affected_versions": "All versions before 2.6.1",
"cwe_ids": [
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"CWE-295",
"CWE-937"
],
"date": "2022-02-17",
"description": "Traefik is an HTTP reverse proxy and load balancer., Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
"fixed_versions": [
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],
"identifier": "CVE-2022-23632",
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"CVE-2022-23632"
],
"not_impacted": "All versions starting from 2.6.1",
"package_slug": "go/github.com/traefik/traefik/v2",
"pubdate": "2022-02-16",
"solution": "Upgrade to version 2.6.1 or above.",
"title": "Improper Certificate Validation",
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"https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc",
"https://github.com/advisories/GHSA-hrhx-6h34-j5hc"
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"uuid": "dea94c23-d790-4f68-a1e1-e3575286a5ef",
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"tags": [
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"timestamp": "20220214164408"
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"number": "v2.6.1"
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"versionEndExcluding": "2.6.1",
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"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
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"lastModifiedDate": "2022-11-23T19:22Z",
"publishedDate": "2022-02-17T15:15Z"
}
}
}
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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.
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