Vulnerability identifier: #VU22807

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11927

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WhatsApp Messenger for Android
Mobile applications / Apps for mobile phones
WhatsApp Messenger for iOS
Mobile applications / Apps for mobile phones

Vendor: WhatsApp

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when parsing EXIF tags in WEBP images. A remote attacker can create a specially crafted WEBP image, send it to the victim, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WhatsApp Messenger for Android: 2.19.2 - 2.19.333

WhatsApp Messenger for iOS: 2.19.10 - 2.19.92

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External links
http://www.facebook.com/security/advisories/cve-2019-11927

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.