CVE-2018-6390 — MEDIUM (6.5)

Vulnerability Description

The WStr::assign function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 does not validate the size of the source memory block before an _copy call, which allows remote attackers to cause a denial of service (access violation and application crash) via a crafted (a) web page, (b) office document, or (c) .rtf file.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wps	Wps Office	10.1.0.7106

Related Weaknesses (CWE)

CWE-119

References

https://github.com/Khwarezmia/WPS_POC/tree/master/wps_20180129ExploitThird Party Advisory
https://github.com/Khwarezmia/WPS_POC/tree/master/wps_20180129ExploitThird Party Advisory

FAQ

What is CVE-2018-6390?

CVE-2018-6390 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The WStr::assign function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 does not validate the size of the source memory block before an _copy call, which allows remote attackers to cau...

How severe is CVE-2018-6390?

CVE-2018-6390 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-6390?

Check the references section above for vendor advisories and patch information. Affected products include: Wps Wps Office.