CVE-2018-9840

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.

CVSS v3.0 6.8 MEDIUM
CVSS v2.0 4.6 MEDIUM

6.8^/10

CVSS v3.0 : MEDIUM

V3 Legend

Vector : AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/signalapp/Signal-iOS/commits/release/2.23.2	Issue Tracking Patch Third Party Advisory
https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3fafd9e9	Patch Third Party Advisory
http://nint.en.do/Signal-Bypass-Screen-locker.php	Broken Link Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:signal:signal:*:*:*:*:*:iphone_os:*:*

Information

Published : 2018-04-09 22:29

Updated : 2019-10-02 17:03

NVD link : CVE-2018-9840

Mitre link : CVE-2018-9840

JSON object : View

CWE

NVD-CWE-noinfo

Products Affected

signal

signal

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6.8 /10