CVE-2019-3557

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The implementations of streams for bz2 and php://output improperly implemented their readImpl functions, returning -1 consistently. This behavior caused some stream functions, such as stream_get_line, to trigger an out-of-bounds read when operating on such malformed streams. The implementations were updated to return valid values consistently. This affects all supported versions of HHVM (3.30 and 3.27.4 and below).

Las implementaciones de los flujos para bz2 y php://output implementaron incorrectamente sus funciones readImpl, devolviendo -1 constantemente. Este comportamiento provocó que algunas funciones, como stream_get_line, desencadenasen una lectura fuera de límites al operar en tales flujos mal formados. Las implementaciones se actualizaron para que devuelvan valores válidos de forma consistente. Esto afecta a todas las versiones soportadas de HVVM (en versiones anteriores a las 3.30 y 3.27.4).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-01-02 CVE Reserved
2019-01-15 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/6e4dd9ec3f14b48170fc45dc9d13a3261765f994	2019-10-09

URL	Date	SRC
https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html	2019-10-09

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"				<= 3.27.4 Search vendor "Facebook" for product "Hhvm" and version " <= 3.27.4"		-		Affected
Facebook Search vendor "Facebook"		Hhvm Search vendor "Facebook" for product "Hhvm"				>= 3.28.0 <= 3.30.0 Search vendor "Facebook" for product "Hhvm" and version " >= 3.28.0 <= 3.30.0"		-		Affected