CVE-2018-6345
Critical
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).
SeverityCritical
CVSS9.8
Exploit probability—
Product
Facebook Hhvm
PublishedJan 15, 2019
First seenJan 15, 2019
Weakness typeCWE-122CWE-122
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hhvm | v ≤ 3.27.5, 3.28.0 ≤ v ≤ 3.30.1 | — |
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