CVE-2015-4016

Valve Steam Client Detection Denial of Service Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The client detection protocol in Valve Steam allows remote attackers to cause a denial of service (process crash) via a crafted response to a broadcast packet.

El protocolo de detección de clientes en Valve Steam permite a atacantes remotos causar una denegación de servicio (caída de proceso) a través de una respuesta manipulada a un paquete de difusión.

This vulnerability allows remote attackers to execute a denial of service attack on vulnerable installations of Valve Steam. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the Steam client detection protocol. By responding to a broadcast packet with a crafted response, an attacker can cause the Steam process to crash.

*Credits: Elvis Collado - HP DVLabs

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-05-18 CVE Reserved
2015-05-19 CVE Published
2024-08-06 CVE Updated
2024-12-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/74735	Third Party Advisory
http://www.zerodayinitiative.com/advisories/ZDI-15-233	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://store.steampowered.com/news/16801	2022-02-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Valvesoftware Search vendor "Valvesoftware"		Steam Client Search vendor "Valvesoftware" for product "Steam Client"				< 2015-05-13 Search vendor "Valvesoftware" for product "Steam Client" and version " < 2015-05-13"		-		Affected