CVE-2018-20655

moderate-risk
Published 2019-06-14

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.

Do I need to act?

~
1.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Whatsapp

References (4)

Third Party Advisory http://www.securityfocus.com/bid/108805
Third Party Advisory https://www.facebook.com/security/advisories/cve-2018-20655/
Third Party Advisory http://www.securityfocus.com/bid/108805
Third Party Advisory https://www.facebook.com/security/advisories/cve-2018-20655/
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 4/34 · Minimal
Exposure 7/34 · Low