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CVE-2018-9840

Good to know:

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Date: April 10, 2018

The Open Whisper Signal app before 2.23.2 for iOS allows physically proximate attackers to bypass the screen locker feature via certain rapid sequences of actions that include app opening, clicking on cancel, and using the home button.

Language: Objective-C

Severity Score

Related Resources (5)

https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3fafd9e9
http://nint.en.do/Signal-Bypass-Screen-locker.php
https://github.com/signalapp/Signal-iOS/commits/release/2.23.2
https://nvd.nist.gov/vuln/detail/CVE-2018-9840
https://www.mend.io/vulnerability-database/CVE-2018-9840

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Insufficient Information

NVD-CWE-noinfo

Top Fix

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Upgrade Version

Upgrade to version 2.23.1.2

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH
Additional information:

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