LightCMS 1.3.4 exclusive Stored XSS

2021.03.06

Credit: Peithon

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2021-3355

CWE: CWE-79

Ogólna skala CVSS: 3.5/10

Znaczenie: 2.9/10

Łatwość wykorzystania: 6.8/10

Wymagany dostęp: Zdalny

Złożoność ataku: Średnia

Autoryzacja: Jednorazowa

Wpływ na poufność: Brak

Wpływ na integralność: Częściowy

Wpływ na dostępność: Brak

# Exploit Title: LightCMS 1.3.4 - 'exclusive' Stored XSS
# Date: 25/02/2021
# Exploit Author: Peithon
# Vendor Homepage: https://github.com/eddy8/LightCMS
# Software Link: https://github.com/eddy8/LightCMS/releases/tag/v1.3.4
# Version: 1.3.4
# Tested on: latest version of Chrome, Firefox on Windows and Linux
# CVE: CVE-2021-3355

An issue was discovered in LightCMS v1.3.4.(https://github.com/eddy8/LightCMS/issues/18) There is a stored-self XSS, allowing an attacker to execute HTML or JavaScript code in a vulnerable Title field to /admin/SensitiveWords.

--------------------------Proof of Concept-----------------------

1. Log in to the background.

2. Navigate to System -> `/admin/SensitiveWords/create` & add the below-shared payload as the exclusive field value. Payload - </span><img src=1 onerror=alert(1) /><span>

3. Visit page `/admin/SensitiveWords`, the payload will be triggered.

See this note in RAW Version

Vote for this issue:

50%

Thanks for you vote!

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

Nick (*)

Email (*)

Video

Text (*)

(*) - required fields.

{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

LightCMS 1.3.4 exclusive Stored XSS

Thanks for you vote!

Thanks for you comment!Your message is in quarantine 48 hours.

Thanks for you comment!
Your message is in quarantine 48 hours.