CVE-2018-6345
9.8 · CRITICALOverview
CVE-2018-6345 is a critical-severity vulnerability affecting facebook hhvm. It was published on January 15, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 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
The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be created with an invalid length, which can then interact poorly with other functions. This affects all supported versions of HHVM (3.30.1 and 3.27.5 and below).
Remediation
Check the references section for vendor advisories and patches from facebook. Update hhvm to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| hhvm | 0 | Affected |
Frequently Asked Questions
What is CVE-2018-6345?
CVE-2018-6345 is a critical-severity vulnerability affecting facebook hhvm. It was published on January 15, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2018-6345?
This vulnerability has a CVSS 3.1 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-2018-6345?
Check the references section for vendor advisories and patches from facebook. Update hhvm to the latest patched version. 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-2018-6345?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-6345 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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