CVE-2018-8909

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-03-22 · updated 2026-06-17
Weakness: CWE-22

Description

The Wire application before 2018-03-07 for Android allows attackers to write to pathnames outside of the downloads directory via a ../ in a filename of a received file, related to AssetService.scala.

Affected products

wireapp wire-ios: before 2018-03-07 — fixed in 2018-03-07

How to fix

Upgrade to a fixed version: wireapp wire-ios 2018-03-07. Check the vendor advisory for mitigations.

References

https://www.x41-dsec.de/reports/X41-Kudelski-Wire-Security-Review-Android.pdf
https://www.x41-dsec.de/reports/X41-Kudelski-Wire-Security-Review-Android.pdf

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