CVE-2019-11931 — A stack-based buffer overflow could be triggered in WhatsApp by sending a specia

A stack-based buffer overflow could be triggered in WhatsApp by sending a specially crafted MP4 file to a WhatsApp user. The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE. This affects Android versions prior to 2.19.27

01What is this vulnerability?

A stack-based buffer overflow could be triggered in WhatsApp by sending a specially crafted MP4 file to a WhatsApp user. The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE. This affects Android versions prior to 2.19.274, iOS versions prior to 2.19.100, Enterprise Client versions prior to 2.25.3, Business for Android versions prior to…

02Affected products

Vendor	Product	Versions
Facebook	WhatsApp for Android	2.19.274, unspecified
Facebook	WhatsApp for iOS	2.19.100, unspecified
Facebook	WhatsApp for Windows Phone	unspecified
Facebook	WhatsApp Enterprise Client	2.25.3, unspecified
Facebook	WhatsApp Business for Android	2.19.104, unspecified
Facebook	WhatsApp Business for iOS	2.19.100, unspecified

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: 2019-11-14T22:55:52.000Z
• Last modified: 2024-08-04T23:10:29.691Z

09References

• www.facebook.com — https://www.facebook.com/security/advisories/cve-2019-11931