Information disclosure in Rakuten Viber

CVE-2018-3987

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.

Vulnerability class: Information Disclosure

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-3987: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • Rakuten Viber — versions 9.3.0.6
  • Rakuten Viber — versions Rakuten Viber Android 9.3.0.6

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-3987?
CVE-2018-3987 is a medium-severity vulnerability in Rakuten Viber, classified under Information Disclosure. CVSS score: 5.5/10. Published 2020-02-13.
How severe is CVE-2018-3987?
Medium severity. CVSS v3 base score is 5.5 out of 10.