CVE-2020-27383 — HIGH (7.8)

Vulnerability Description

Battle.net.exe in Battle.Net 1.27.1.12428 suffers from an elevation of privileges vulnerability which can be used by an "Authenticated User" to modify the existing executable file with a binary of his choice. The vulnerability exist due to weak set of permissions being granted to the "Authenticated Users Group" which grants the (F) Flag aka "Full Control"

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Blizzard	Battle.Net	1.27.1.12428

Related Weaknesses (CWE)

CWE-281

References

https://github.com/FreySolarEye/CVE/blob/master/Battle%20Net%20Launcher%20Local%ExploitThird Party Advisory
https://github.com/FreySolarEye/CVE/blob/master/Battle%20Net%20Launcher%20Local%ExploitThird Party Advisory

FAQ

What is CVE-2020-27383?

CVE-2020-27383 is a vulnerability with a CVSS score of 7.8 (HIGH). Battle.net.exe in Battle.Net 1.27.1.12428 suffers from an elevation of privileges vulnerability which can be used by an "Authenticated User" to modify the existing executable file with a binary of his...

How severe is CVE-2020-27383?

CVE-2020-27383 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27383?

Check the references section above for vendor advisories and patch information. Affected products include: Blizzard Battle.Net.