Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Signal | Signal | < 2.23.2 |
References
- http://nint.en.do/Signal-Bypass-Screen-locker.phpBroken LinkThird Party Advisory
- https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3PatchThird Party Advisory
- https://github.com/signalapp/Signal-iOS/commits/release/2.23.2Issue TrackingPatchThird Party Advisory
- http://nint.en.do/Signal-Bypass-Screen-locker.phpBroken LinkThird Party Advisory
- https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3PatchThird Party Advisory
- https://github.com/signalapp/Signal-iOS/commits/release/2.23.2Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2018-9840?
CVE-2018-9840 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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...
How severe is CVE-2018-9840?
CVE-2018-9840 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-9840?
Check the references section above for vendor advisories and patch information. Affected products include: Signal Signal.