ContentKeeper Web Appliance < 125.10 Arbitrary File Access via mimencode

ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 expose the mimencode binary via a CGI endpoint, allowing unauthenticated attackers to retrieve arbitrary files from the filesystem. By crafting a POST request to /cgi-bin/ck/mimencode with traversal and output parameters, attackers can read sensitive files such as /etc/passwd outside the webroot.

ContentKeeper 123.25 and earlier places passwords in cleartext in an INPUT element in cgi-bin/ck/changepw.cgi, which allows remote authenticated users to obtain passwords via this URI.

ContentKeeper Web Appliance < 125.10 RCE via mimencode

ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 are vulnerable to remote command execution due to insecure handling of file uploads via the mimencode CGI utility. The vulnerability allows unauthenticated attackers to upload and execute arbitrary scripts as the Apache user. Additionally, the exploit can optionally escalate privileges by abusing insecure PATH usage in the benetool binary, resulting in root-level access if successful.