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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HHVM | 4.45.1, 4.45.0, 4.44.1, 4.44.0, 4.43.1, 4.43.0, 4.42.1, 4.42.0, 4.41.1, 4.41.0, 4.40.1, 4.40.0, 4.39.1, 4.39.0, 4.38.1, 4.33.0 – < unspecified, 4.32.1, 4.9.0 – < unspecified, 4.8.7, unspecified – ≤ 4.8.6 | unspecified |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | hhvm | No fix yet | — |
| Ubuntu 16.04 LTS | hhvm | No fix yet | — |