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CVE-2020-1892

Published: 3 March 2020

Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to information leak and 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.

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
hhvm
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

groovy Does not exist

hirsute Does not exist

lunar Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H