CVE-2020-5290
Last modified
CVE-2020-5290 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In RedpwnCTF before version 2.3, there is a session fixation vulnerability in exploitable through the `#token=$ssid` hash when making a request to the `/verify` endpoint. An attacker team could potentially steal flags by, for example, exploiting a stored XSS payload in a CTF challenge so that victim teams who solve the challenge are unknowingly (and against their will) signed into the attacker team's account. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
Description
In RedpwnCTF before version 2.3, there is a session fixation vulnerability in exploitable through the `#token=$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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ctfd | Rctf | < 2.3 |
References
- https://github.com/redpwn/rctf/issues/147Exploit, Third Party Advisory
- https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpqExploit, Third Party Advisory
- https://github.com/redpwn/rctf/issues/147Exploit, Third Party Advisory
- https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpqExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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