2020-06-22 21:25:52 +00:00
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id: linkerd-badrule-detect
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# Detect the Linkerd service by overriding the delegation table with an invalid
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# rule, the presence of the service is indicated by either:
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# - a "Via: .. linkerd .."
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# - a "l5d-err" and/or a "l5d-success" header
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# - a literal error in the body
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info:
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name: Linkerd detection via bad rule
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author: dudez
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2020-06-24 21:07:58 +00:00
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severity: informative
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2020-06-22 21:25:52 +00:00
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requests:
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- method: GET
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path:
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- "{{BaseURL}}/"
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headers:
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l5d-dtab: /svc/*
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matchers-condition: or
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matchers:
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- type: regex
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name: via-linkerd-present
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regex:
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- '(?mi)^Via\s*?:.*?linkerd.*$'
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part: header
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- type: regex
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name: l5d-err-present
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regex:
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2020-06-22 21:41:24 +00:00
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- '(?mi)^l5d-err:.*$'
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2020-06-22 21:25:52 +00:00
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part: header
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- type: regex
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name: l5d-success-class-present
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regex:
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2020-06-22 21:41:24 +00:00
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- '(?mi)^l5d-success-class: 0.*$'
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2020-06-22 21:25:52 +00:00
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part: header
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- type: word
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name: body-error-present
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words:
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- 'expected but end of input found at'
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part: body
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