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wpvulndbVishal MohanWPVDB-ID:3957056C-DF25-41F7-AB0D-1D09222F2FA5
HistorySep 27, 2021 - 12:00 a.m.

Great Quotes <= 1.0.0 - Admin+ Stored Cross-Site Scripting

2021-09-2700:00:00
Vishal Mohan
wpscan.com
6

4.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

3.5 Low

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

The plugin does not sanitise and escape the Quote and Author fields of its Quotes, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.

PoC

Add/edit a Quote and put the following payload in the “Quote” and “Author” fields:

CPENameOperatorVersion
great-quoteseq*

4.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

3.5 Low

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

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