Buffer overflow in Facebook Hhvm
CVE-2018-6345
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…
Vulnerability class: Buffer Overflow
EPSS: 0.017 (75.3th 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 3.30.2, 3.30.0, 3.27.6
Weakness classification (CWE)
References
- cve-assign@fb.com (Patch, Third Party Advisory, x_refsource_MISC)
- cve-assign@fb.com (x_refsource_MISC, Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-6345?
- CVE-2018-6345 is a critical-severity vulnerability in Facebook Hhvm, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-01-15.
- How severe is CVE-2018-6345?
- Critical severity. CVSS v3 base score is 9.8 out of 10.