CVE-2018-3987 Information disclosure in Rakuten Viber

Medium 4.2 Published 12 Feb 2020 Updated 5 Aug 2024

Deleted secret chats in Viber for Android leave photos accessible to other apps, allowing unauthorized data access.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-3987?

CVE-2018-3987 is a medium-severity vulnerability in Rakuten Viber, published on 12 Feb 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An exploitable information disclosure vulnerability exists in the 'Secret Chats' functionality of Rakuten Viber on Android 9.3.0.6. The 'Secret Chats' functionality allows a user to delete all traces of a chat either by using a time trigger or by direct request. There is a bug in this functionality which leaves behind photos taken and shared on the secret chats, even after the chats are deleted. These photos will be stored in the device and accessible to all applications installed on the Android device.

Weakness: CWE-200

Which versions are affected by CVE-2018-3987?

It affects 1 product.

Products include Rakuten Viber.

How do I fix CVE-2018-3987?

No fix has been published for CVE-2018-3987 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-3987 being exploited?

There is no known exploitation of CVE-2018-3987 in the wild and no public exploit code.

Sources

Also known as GHSA-vxjc-fx83-gm4p.