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CVE-2018-6339

9.8 · CRITICAL

When receiving calls using WhatsApp on Android, a stack allocation failed to properly account for the amount of data being passed in.

Published Jun 14, 2019CWE-121EPSS 1.54%

Overview

CVE-2018-6339 is a critical-severity vulnerability. It was published on June 14, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

When receiving calls using WhatsApp on Android, a stack allocation failed to properly account for the amount of data being passed in. An off-by-one error meant that data was written beyond the allocated space on the stack. This issue affects WhatsApp for Android starting in version 2.18.180 and was fixed in version 2.18.295. It also affects WhatsApp Business for Android starting in version v2.18.103 and was fixed in version v2.18.150.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.facebook.com/security/advisories/cve-2018-6339/Refwww.facebook.com/security/advisories/cve-2018-6339/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-6339?

CVE-2018-6339 is a critical-severity vulnerability. It was published on June 14, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

How severe is CVE-2018-6339?

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-6339?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-6339?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-6339 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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