CVE-2018-20655

CRITICAL

WhatsApp and WhatsApp Business < 2.18.90.24 - Stack-based Buffer Overflow via Sender-provided Packet

Title source: llm

Description

When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.

References (2)

Core 2

Core References

Third Party Advisory x_refsource_misc

https://www.facebook.com/security/advisories/cve-2018-20655/

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/108805

Scores

CVSS v3 9.8

EPSS 0.0220

EPSS Percentile 80.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-121 CWE-787

Status published

Products (2)

whatsapp/whatsapp < 2.18.90.24

whatsapp/whatsapp_business < 2.18.90.24

Published Jun 14, 2019

Tracked Since Feb 18, 2026