CVE-2019-15315

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local users can replace the current versions of SteamService.exe and SteamService.dll with older versions that lack the CVE-2019-14743 patch.

Overview

CVE ID
CVE-2019-15315

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-08-21T20:15:12

Last Modified Date
2020-08-24T17:37:01

Weakness Enumerations

CWE	URL
CWE-732	http://cwe.mitre.org/data/definitions/732.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:a:valvesoftware:steam_client::::::::	1	OR	2019-08-16
cpe:2.3:o:microsoft:windows:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://xiaoyinl.github.io/steam_EoP_bypass.html	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-15315
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15315

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:35:38				Added to TrackCVE
2022-12-04 01:39:40	2019-08-21T20:15Z	2019-08-21T20:15:12	CVE Published Date	updated
2022-12-04 01:39:40		2020-08-24T17:37:01	CVE Modified Date	updated
2022-12-04 01:39:40		Analyzed	Vulnerability Status	updated