Local Privilege Escalation in Signal Desktop for Windows
CVE-2019-19954

7.3HIGH

Key Information:

Vendor

Signal

Status
Signal-desktop
Vendor
CVE Published:
24 December 2019

What is CVE-2019-19954?

A local privilege escalation vulnerability exists in Signal Desktop for Windows versions prior to 1.29.1. This vulnerability allows local users to exploit a flaw by creating a tampered file at %SYSTEMDRIVE%\node_modules.bin\wmic.exe. If successfully executed, this would enable the user to gain elevated privileges within the operating system, compromising system integrity and confidentiality.

References

https://blog.mirch.io/2019/12/18/signal-desktop-windows-lpe/
x_refsource_MISC
https://github.com/signalapp/Signal-Desktop/commit/2da39c...
x_refsource_MISC

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.