CVE-2018-13042 - 1Password Android < 7.0 - Denial Of Service

[Valerio Brussani <valeriobrussani () gmail com>]

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Description
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The 1Password application < 7.0 for Android is affected by a Denial Of
Service vulnerability. By starting the activity
com.agilebits.onepassword.filling.openyolo.OpenYoloDeleteActivity or
com.agilebits.onepassword.filling.openyolo.OpenYoloRetrieveActivity from an
external application (since they are exported), it is possible to crash the
1Password instance.

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Poc
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To invoke the exported activity and crash the app, it is possible
to use Drozer:

run app.activity.start --component com.agilebits.onepassword
com.agilebits.onepassword.filling.openyolo.OpenYoloDeleteActivity

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Affected Components
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com.agilebits.onepassword.filling.openyolo.OpenYoloDeleteActivity
com.agilebits.onepassword.filling.openyolo.OpenYoloRetrieveActivity

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Disclosure timeline
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2018-07-27 Contacting 1Password

2018-07-30 1Password acknowledges the vulnerability

2018-08-22 The vulnerability is fixed and made public



Valerio Brussani (@val_brux)