CVE-2019-15315 — HIGH (7.8)

Q: How severe is CVE-2019-15315?

CVE-2019-15315 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2019-15315?

Check the references section above for vendor advisories and patch information. Affected products include: Valvesoftware Steam Client, Microsoft Windows.

Vulnerability 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.

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Valvesoftware	Steam Client	<= 2019-08-16
Microsoft	Windows	-

Related Weaknesses (CWE)

CWE-732

References

https://xiaoyinl.github.io/steam_EoP_bypass.htmlThird Party Advisory
https://xiaoyinl.github.io/steam_EoP_bypass.htmlThird Party Advisory

FAQ

What is CVE-2019-15315?

CVE-2019-15315 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 wit...

How severe is CVE-2019-15315?

CVE-2019-15315 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-15315?

Check the references section above for vendor advisories and patch information. Affected products include: Valvesoftware Steam Client, Microsoft Windows.