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thnThe Hacker NewsTHN:A913A7B9AB721B6F0290D8D64D093B57
HistoryFeb 27, 2024 - 2:43 p.m.

WordPress LiteSpeed Plugin Vulnerability Puts 5 Million Sites at Risk

2024-02-2714:43:00
The Hacker News
thehackernews.com
40
wordpress
litespeed
plugin
vulnerability
5 million sites
risk
cve-2023-40000
privilege escalation
cross-site scripting
patchstack
update
admin notice
wordfence
cvss score
authentication

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.7 Medium

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

17.3%

WordPress LiteSpeed Plugin

A security vulnerability has been disclosed in the LiteSpeed Cache plugin for WordPress that could enable unauthenticated users to escalate their privileges.

Tracked as CVE-2023-40000, the vulnerability was addressed in October 2023 in version 5.7.0.1.

“This plugin suffers from unauthenticated site-wide stored [cross-site scripting] vulnerability and could allow any unauthenticated user from stealing sensitive information to, in this case, privilege escalation on the WordPress site by performing a single HTTP request,” Patchstack researcher Rafie Muhammad said.

LiteSpeed Cache, which is used to improve site performance, has more than five million installations. The latest version of the plugin is 6.1, which was released on February 5, 2024.

Cybersecurity

The WordPress security company said CVE-2023-40000 is the result of a lack of user input sanitization and escaping output. The vulnerability is rooted in a function named update_cdn_status() and can be reproduced in a default installation.

“Since the XSS payload is placed as an admin notice and the admin notice could be displayed on any wp-admin endpoint, this vulnerability also could be easily triggered by any user that has access to the wp-admin area,” Muhammad said.

WordPress LiteSpeed Plugin

The disclosure arrives four months after Wordfence revealed another XSS flaw in the same plugin (CVE-2023-4372, CVSS score: 6.4) due to insufficient input sanitization and output escaping on user supplied attributes. It was addressed in version 5.7.

“This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page,” István Márton said.

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5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.7 Medium

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

17.3%