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huntrLujiefsi31EAF0FE-4D91-4022-AA9B-802BC6EAFB8F
HistoryMar 06, 2023 - 7:55 a.m.

CSV Injection in CSV files generated by the backend

2023-03-0607:55:56
lujiefsi
www.huntr.dev
11

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

36.7%

1 First the admin create the event and publish it.

2 unauthenticated users go to the reservation page

3 unauthenticated users fill the fisrst name and last name as “=1+cmd|‘/C calc’!A0”

4 admin download all the attendees’ data as csv.

5 admin open the csv file and the calculator is opened.

see the poc : https://1drv.ms/v/s!AksJ421iyCG-mTBW7PhxTaDJGlbk?e=LudXWX

see https://owasp.org/www-community/attacks/CSV_Injection to fix it.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

36.7%

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