Remote code execution in Kingsoft WPS Office

Published: 2024-08-28

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-7262 CVE-2024-7263
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	WPS Office Client/Desktop applications / Office applications
Vendor	Kingsoft Corp.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU96594

Risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2024-7262

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient path validation in promecefpluginhost.exe. A remote attacker can trick the victim into opening a specially crafted spreadsheet document and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WPS Office: 12.2.0.13110 - 12.2.0.13306

External links

http://www.wps.com/whatsnew/pc/20240422/
http://www.welivesecurity.com/en/eset-research/analysis-of-two-arbitrary-code-execution-vulnerabilities-affecting-wps-office/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Input validation error

EUVDB-ID: #VU96595