Buffer overflow in Facebook Hhvm
CVE-2019-3561
Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).
Vulnerability class: Buffer Overflow
EPSS: 0.017 (74.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Facebook Hhvm — versions 4.0.4, 4.0.0, 3.30.5
Weakness classification (CWE)
References
- cve-assign@fb.com (Third Party Advisory, x_refsource_MISC)
- cve-assign@fb.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-3561?
- CVE-2019-3561 is a critical-severity vulnerability in Facebook Hhvm, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-04-29.
- How severe is CVE-2019-3561?
- Critical severity. CVSS v3 base score is 9.8 out of 10.