What is CVE-2019-3570?

CVE-2019-3570 is a critical-severity vulnerability in Facebook Hhvm, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-07-18.

How severe is CVE-2019-3570?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Facebook Hhvm

CVE-2019-3570

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(…

Vulnerability class: Buffer Overflow

EPSS: 0.017 (74.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Facebook Hhvm — versions 4.8.1, 4.8.0, 4.7.1
Facebook Hiphop_virtual_machine — versions 4.1.0, 4.2.0, 4.3.0

Weakness classification (CWE)

References

cve-assign@fb.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
cve-assign@fb.com (x_refsource_CONFIRM, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2019-3570?: CVE-2019-3570 is a critical-severity vulnerability in Facebook Hhvm, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-07-18.
How severe is CVE-2019-3570?: Critical severity. CVSS v3 base score is 9.8 out of 10.