CVE-2020-8989 Information

Description

In the Voatz application 2020-01-01 for Android the amount of data transmitted during a single voter’s vote depends on the different lengths of the metadata across the available voting choices which makes it easier for remote attackers to discover this voter’s choice by sniffing the network. For example a small amount of sniffed data may indicate that a vote was cast for the candidate with the least metadata. An active man-in-the-middle attacker can leverage this behavior to disrupt voters’ abilities to vote for a candidate opposed by the attacker.

CVSS Vector

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

Reference

https://blog.voatz.com/?p=1209 https://internetpolicy.mit.edu/wp-content/uploads/2020/02/SecurityAnalysisOfVoatz_Public.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3