{"id":"CVE-2020-5290","published":"2020-04-01T19:25:15Z","modified":"2024-08-04T08:22:09Z","title":"session fixation in rCTF","vendor":"redpwn","product":"rctf","tier":"core","eol":null,"affectedVersions":[{"vendor":"redpwn","product":"rctf","versions":["< 2.3"]}],"description":{"text":"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&#39;s account. Then, the attacker can gain points / value off the backs of the victims. This is patched in version 2.3.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":6.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00816,"percentile":0.5699,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-384","name":"Session Fixation"}],"references":[{"url":"https://github.com/redpwn/rctf/security/advisories/GHSA-p5fh-2vhw-fvpq","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/redpwn/rctf/issues/147","tags":["x_refsource_MISC"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1563","name":"Remote Service Session Hijacking","tactics":["lateral-movement"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"primary_impact","evidence":[],"confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2020-26484","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-26484","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"source"},{"stage":"primary","techniques":["T1563"],"provenance":"source"}],"timeline":[{"date":"2020-04-01","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2020-5290","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":15.9,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":11.4,"detail":"percentile 0.5699"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":4.55,"detail":"base score 6.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}