Vulnerability · Published Apr 1, 2020 · Assigned by GitHub_M
CVE-2020-5290session fixation in rCTF
Medium 6.5
In plain English
A medium-severity session fixation in rctf from redpwn. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
References
- https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpq x_refsource_CONFIRM
- https://github.com/redpwn/rctf/issues/147 x_refsource_MISC