CVE-2020-1893
High
Description
Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Facebook Hhvm
PublishedMar 3, 2020
First seenMar 3, 2020
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- facebook hhvm4.8.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hhvm | v < 4.8.7, 4.9.0 ≤ v ≤ 4.32.0, 4.33.0 ≤ v ≤ 4.38.0, 4.39.0, 4.40.0, 4.41.0, 4.42.0, 4.43.0, 4.44.0, 4.45.0 | 4.8.7 |
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