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4.2 KiB
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4.2 KiB
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{"schema_version":"1.9.0","id":"GHSA-6p68-w45g-48j7","published":"2025-04-21T16:17:38Z","modified":"2025-11-27T08:34:01.288816Z","aliases":["CVE-2025-32431","GO-2025-3634"],"summary":"Traefik has a possible vulnerability with its path matchers","details":"## Impact\n\nThere is a potential vulnerability in Traefik managing the requests using a `PathPrefix`, `Path` or `PathRegex` matcher.\n\nWhen Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a `/../` in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain.\n\n## Example\n\n```yaml\napiVersion: traefik.io/v1alpha1\nkind: IngressRoute\nmetadata:\n name: my-service\nspec:\n routes:\n - match: PathPrefix(‘/service’)\n kind: Rule\n services:\n - name: service-a\n port: 8080\n middlewares:\n - name: my-middleware-a\n - match: PathPrefix(‘/service/sub-path’)\n kind: Rule\n services:\n - name: service-a\n port: 8080\n```\n\nIn such a case, the request `http://mydomain.example.com/service/sub-path/../other-path` will reach the backend `my-service-a` without operating the middleware `my-middleware-a` unless the computed path is `http://mydomain.example.com/service/other-path` and should be computes by the first router (operating `my-middleware-a`).\n\n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v2.11.24\n- https://github.com/traefik/traefik/releases/tag/v3.3.6\n- https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2\n\n## Workaround\n\nAdd a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path.\n\nExample: \n\n```yaml\nmatch: PathPrefix(`/service`) && !PathRegexp(`(?:(/\\.\\./)+.*)`)\n```\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).","affected":[{"package":{"name":"github.com/traefik/traefik","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.7.34"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-6p68-w45g-48j7/GHSA-6p68-w45g-48j7.json"}},{"package":{"name":"github.com/traefik/traefik/v2","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.23"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-6p68-w45g-48j7/GHSA-6p68-w45g-48j7.json"}},{"package":{"name":"github.com/traefik/traefik/v3","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.3.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-6p68-w45g-48j7/GHSA-6p68-w45g-48j7.json"}},{"package":{"name":"github.com/traefik/traefik/v3","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.4.0-rc1"},{"fixed":"3.4.0-rc2"}]}],"versions":["3.4.0-rc1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-6p68-w45g-48j7/GHSA-6p68-w45g-48j7.json"}}],"references":[{"type":"WEB","url":"https://github.com/traefik/traefik/security/advisories/GHSA-6p68-w45g-48j7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-32431"},{"type":"WEB","url":"https://github.com/traefik/traefik/pull/11684"},{"type":"PACKAGE","url":"https://github.com/traefik/traefik"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v2.11.24"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.3.6"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2"}],"database_specific":{"cwe_ids":["CWE-22"],"github_reviewed":true,"github_reviewed_at":"2025-04-21T16:17:38Z","nvd_published_at":"2025-04-21T16:15:54Z","severity":"HIGH"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P"}]} |