CVE-2019-3570
9.8 · CRITICALOverview
CVE-2019-3570 is a critical-severity vulnerability affecting facebook hiphop_virtual_machine. It was published on July 18, 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
Call to the scrypt_enc() function in HHVM can lead to heap corruption by using specifically crafted parameters (N, r and p). This happens if the parameters are configurable by an attacker for instance by providing the output of scrypt_enc() in a context where Hack/PHP code would attempt to verify it by re-running scrypt_enc() with the same parameters. This could result in information disclosure, memory being overwriten or crashes of the HHVM process. This issue affects versions 4.3.0, 4.4.0, 4.5.0, 4.6.0, 4.7.0, 4.8.0, versions 3.30.5 and below, and all versions in the 4.0, 4.1, and 4.2 series.
Remediation
Check the references section for vendor advisories and patches from facebook. Update hiphop_virtual_machine 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 |
|---|---|---|---|
| hiphop_virtual_machine | 0 | Affected |
Frequently Asked Questions
What is CVE-2019-3570?
CVE-2019-3570 is a critical-severity vulnerability affecting facebook hiphop_virtual_machine. It was published on July 18, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2019-3570?
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-2019-3570?
Check the references section for vendor advisories and patches from facebook. Update hiphop_virtual_machine 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-2019-3570?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-3570 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.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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