CVE-2021-24964

LiteSpeed Cache < 4.4.4 - IP Check Bypass to Unauthenticated Stored XSS

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The LiteSpeed Cache WordPress plugin before 4.4.4 does not properly verify that requests are coming from QUIC.cloud servers, allowing attackers to make requests to certain endpoints by using a specific X-Forwarded-For header value. In addition, one of the endpoint could be used to set CSS code if a setting is enabled, which will then be output in some pages without being sanitised and escaped. Combining those two issues, an unauthenticated attacker could put Cross-Site Scripting payloads in pages visited by users.

El plugin LiteSpeed Cache de WordPress versiones anteriores a 4.4.4, no verifica correctamente que las peticiones proceden de servidores QUIC.cloud, permitiendo a atacantes realizar peticiones a determinados endpoints usando un valor de encabezado X-Forwarded-For específico. Además, uno de los endpoints podría ser usado para establecer código CSS si es habilitado un ajuste, que luego será emitido en algunas páginas sin ser saneado y escapado. Combinando estos dos problemas, un atacante no autenticado podría poner cargas útiles de tipo Cross-Site Scripting en las páginas visitadas por los usuarios

*Credits: Emil Kylander

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-11-30 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-09-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://wpscan.com/vulnerability/e9966b3e-2eb9-4d70-8c18-6a829b4827cc	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Litespeedtech Search vendor "Litespeedtech"		Litespeed Cache Search vendor "Litespeedtech" for product "Litespeed Cache"				< 4.4.4 Search vendor "Litespeedtech" for product "Litespeed Cache" and version " < 4.4.4"		wordpress		Affected