rConfig 3.9.4 is vulnerable to session fixation because session expiry and randomization are mishandled. The application can reuse a session via PHPSESSID. Also, an attacker can exploit this vulnerability in conjunction with CVE-2020-12256 or CVE-2020-12259.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12258
Reference (s):
- https://gist.github.com/farid007/8855031bad0e497264e4879efb5bc9f8