CVE-2018-9840

View on CVE.org

Published Apr 10, 2018 CVSS 3.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2018-21434	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.

Metrics

No CVSS v4.0

No CVSS v3.1

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.417% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://nint.en.do/Signal-Bypass-Screen-locker.php
https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3fafd9e9
https://github.com/signalapp/Signal-iOS/commits/release/2.23.2

History

No history.

Subscriptions

Signal Signal

Weaknesses

NVD-CWE-noinfo

Sources

CVE record Updated: Aug 5, 2024, 7:24 AM

Status: PUBLISHED
Assigner: mitre
Published: Apr 10, 2018, 5:00 AM
Updated: Aug 5, 2024, 7:24 AM
Reserved: Apr 7, 2018, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 2:07 AM

Status: Modified
Published: Apr 10, 2018, 5:29 AM
Modified: Jun 17, 2026, 2:07 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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