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CVE-2020-5290— session fixation in rCTF

Quick assessment

Affected
redpwn rctf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RedpwnCTF 2.3之前版本中存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。

CVSS 6.5 · Medium EPSS 0.82% · P56
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I. Basic Information for CVE-2020-5290

Vulnerability Information
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Vulnerability Title
session fixation in rCTF
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5
Vulnerability Title
RedpwnCTF 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RedpwnCTF 2.3之前版本中存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
redpwn rctf < 2.3 -

II. Public POCs for CVE-2020-5290

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III. Intelligence Information for CVE-2020-5290

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Vendor Advisories for CVE-2020-5290 (1)

Other References for CVE-2020-5290 (1)

IV. Related Vulnerabilities

Same weakness: CWE-384

V. Comments for CVE-2020-5290

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