Vulnerability Description
In RedpwnCTF before version 2.3, there is a session fixation vulnerability in exploitable through the `#token=$ssid` hash when making a request to the `/verify` endpoint. An attacker team could potentially steal flags by, for example, exploiting a stored XSS payload in a CTF challenge so that victim teams who solve the challenge are unknowingly (and against their will) signed into the attacker team's account. Then, the attacker can gain points / value off the backs of the victims. This is patched in version 2.3.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ctfd | Rctf | < 2.3 |
Related Weaknesses (CWE)
References
- https://github.com/redpwn/rctf/issues/147ExploitThird Party Advisory
- https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpqExploitThird Party Advisory
- https://github.com/redpwn/rctf/issues/147ExploitThird Party Advisory
- https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpqExploitThird Party Advisory
FAQ
What is CVE-2020-5290?
CVE-2020-5290 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In RedpwnCTF before version 2.3, there is a session fixation vulnerability in exploitable through the `#token=$ssid` hash when making a request to the `/verify` endpoint. An attacker team could potent...
How severe is CVE-2020-5290?
CVE-2020-5290 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-5290?
Check the references section above for vendor advisories and patch information. Affected products include: Ctfd Rctf.