CVE-2019-2124 — In ComposeActivityEmailExternal of ComposeActivityEmailExternal

In ComposeActivityEmailExternal of ComposeActivityEmailExternal.java in Android 7.1.1, 7.1.2, 8.0, 8.1 and 9, there is a possible way to silently attach files to an email due to a confused deputy. This could lead to local information disclosure.

01What is this vulnerability?

In ComposeActivityEmailExternal of ComposeActivityEmailExternal.java in Android 7.1.1, 7.1.2, 8.0, 8.1 and 9, there is a possible way to silently attach files to an email due to a confused deputy. This could lead to local information disclosure.

02Affected products

Vendor	Product	Versions
n	a / Android	Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-09-05T21:41:22.000Z
• Last modified: 2024-08-04T18:42:50.281Z

09References

• source.android.com — https://source.android.com/security/bulletin/2019-09-01