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CERT Coordination Center

AppsGeyser generates Android applications that fail to properly validate SSL certificates

Vulnerability Note VU#1680209

Original Release Date: 2014-12-19 | Last Revised: 2015-01-07


AppsGeyser generates applications that fail to properly validate SSL certificates.


AppsGeyser is an online tool that generates Android applications. At the time of publication of this vulnerability note, the AppsGeyser website claims to have generated over 1.3 million Android applications. The applications that are generated by AppsGeyser include code that disables SSL certificate validation for HTTPS traffic.


When a victim is using an application generated by AppsGeyser, an attacker on the same network as the Android device may be able to view or modify network traffic that should have been protected by HTTPS. The impact varies based on what the application is doing. Possible outcomes include credential stealing or arbitrary code execution.


Regenerate affected Android applications

The AppsGeyser application generator has been updated to correctly validate SSL certificates. Any applications that were created before December 24, 2014 should be regenerated.

Vendor Information


AppsGeyser Affected

Notified:  December 12, 2014 Updated: December 19, 2014



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group Score Vector
Base 0 AV:--/AC:--/Au:--/C:--/I:--/A:--
Temporal 0 E:ND/RL:ND/RC:ND
Environmental 0 CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND



This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

CVE IDs: None
Date Public: 2014-12-12
Date First Published: 2014-12-19
Date Last Updated: 2015-01-07 21:40 UTC
Document Revision: 15

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