7.0
HIGH
CVE-2019-15316
Steam Client for Windows Privilege Escalation
Description

Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition.

INFO

Published Date :

Aug. 21, 2019, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 4:28 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.0
Affected Products

The following products are affected by CVE-2019-15316 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows
1 Valvesoftware steam_client
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-15316.

URL Resource
https://amonitoring.ru/article/onemore_steam_eop_0day/ Third Party Advisory
https://habr.com/ru/company/pm/blog/464367/ Third Party Advisory
https://www.youtube.com/watch?v=I93aH86BUaE Exploit Third Party Advisory
https://www.youtube.com/watch?v=ZCHrjP0cMew Exploit Third Party Advisory
https://amonitoring.ru/article/onemore_steam_eop_0day/ Third Party Advisory
https://habr.com/ru/company/pm/blog/464367/ Third Party Advisory
https://www.youtube.com/watch?v=I93aH86BUaE Exploit Third Party Advisory
https://www.youtube.com/watch?v=ZCHrjP0cMew Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-15316 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-15316 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://amonitoring.ru/article/onemore_steam_eop_0day/
    Added Reference https://habr.com/ru/company/pm/blog/464367/
    Added Reference https://www.youtube.com/watch?v=I93aH86BUaE
    Added Reference https://www.youtube.com/watch?v=ZCHrjP0cMew
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-264 CWE-367 CWE-732
  • Initial Analysis by [email protected]

    Aug. 30, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://amonitoring.ru/article/onemore_steam_eop_0day/ No Types Assigned https://amonitoring.ru/article/onemore_steam_eop_0day/ Third Party Advisory
    Changed Reference Type https://habr.com/ru/company/pm/blog/464367/ No Types Assigned https://habr.com/ru/company/pm/blog/464367/ Third Party Advisory
    Changed Reference Type https://www.youtube.com/watch?v=I93aH86BUaE No Types Assigned https://www.youtube.com/watch?v=I93aH86BUaE Exploit, Third Party Advisory
    Changed Reference Type https://www.youtube.com/watch?v=ZCHrjP0cMew No Types Assigned https://www.youtube.com/watch?v=ZCHrjP0cMew Exploit, Third Party Advisory
    Added CWE CWE-264
    Added CPE Configuration AND OR *cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:* versions up to (including) 2019-08-20 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-15316 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-15316 weaknesses.

CAPEC-27: Leveraging Race Conditions via Symbolic Links Leveraging Race Conditions via Symbolic Links CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs Accessing Functionality Not Properly Constrained by ACLs CAPEC-17: Using Malicious Files Using Malicious Files CAPEC-60: Reusing Session IDs (aka Session Replay) Reusing Session IDs (aka Session Replay) CAPEC-61: Session Fixation Session Fixation CAPEC-62: Cross Site Request Forgery Cross Site Request Forgery CAPEC-122: Privilege Abuse Privilege Abuse CAPEC-127: Directory Indexing Directory Indexing CAPEC-180: Exploiting Incorrectly Configured Access Control Security Levels Exploiting Incorrectly Configured Access Control Security Levels CAPEC-206: Signing Malicious Code Signing Malicious Code CAPEC-234: Hijacking a privileged process Hijacking a privileged process CAPEC-642: Replace Binaries Replace Binaries
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.13 }} 0.01%

score

0.47671

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: