CVE-2020-1892

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Comprobaciones de límites insuficientes cuando se decodifica JSON en JSON_parser permiten un acceso de lectura en una memoria fuera de límites, conllevando a un filtrado de información y a una DOS. Este problema afecta a HHVM versiones 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versiones entre 4.33.0 y 4.38.0 (inclusive), versiones entre 4.9.0 y 4.32.0 (inclusive), y versiones anteriores a 4.8.7.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-02 CVE Reserved
2020-03-03 CVE Published
2023-03-07 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d	2020-03-05

URL	Date	SRC
https://hhvm.com/blog/2020/02/20/security-update.html	2020-03-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				< 4.8.7 Search vendor "Facebook" for product "Hhvm" and version " < 4.8.7"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				>= 4.9.0 <= 4.32.0 Search vendor "Facebook" for product "Hhvm" and version " >= 4.9.0 <= 4.32.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				>= 4.33.0 <= 4.38.0 Search vendor "Facebook" for product "Hhvm" and version " >= 4.33.0 <= 4.38.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.39.0 Search vendor "Facebook" for product "Hhvm" and version "4.39.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.40.0 Search vendor "Facebook" for product "Hhvm" and version "4.40.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.41.0 Search vendor "Facebook" for product "Hhvm" and version "4.41.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.42.0 Search vendor "Facebook" for product "Hhvm" and version "4.42.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.43.0 Search vendor "Facebook" for product "Hhvm" and version "4.43.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.44.0 Search vendor "Facebook" for product "Hhvm" and version "4.44.0"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				4.45.0 Search vendor "Facebook" for product "Hhvm" and version "4.45.0"		-		Affected