CVE Vulnerability

CVE-2020-5290

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/redpwn/rctf/issues/147 Exploit Third Party Advisory
https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpq Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:ctfd:rctf:*:*:*:*:*:*:*:*
Information

Published : 2020-04-01 08:15

Updated : 2020-04-03 01:40

NVD link : CVE-2020-5290

Mitre link : CVE-2020-5290

Products Affected
No products.
CWE
CWE-384

Session Fixation