Vulnerability identifier: #VU31041

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6349

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

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

Vendor: WhatsApp

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

When receiving calls using WhatsApp for Android, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for Android prior to 2.18.248 and WhatsApp Business for Android prior to 2.18.132.

Mitigation
Install update from vendor's website.

Vulnerable software versions

WhatsApp Messenger for Android: 2.18.1 - 2.18.129

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External links
http://www.securityfocus.com/bid/108804
http://www.facebook.com/security/advisories/cve-2018-6349/

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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.