VulnerabilityModified

CVE-2015-2553

HIGH 7.2EPSS 3.26%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The kernel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 mishandles junctions during mountpoint creation, which makes it easier for local users to gain privileges by leveraging certain sandbox access, aka "Windows Mount Point Elevation of Privilege Vulnerability."

CVSS 2.0: 7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS: 3.26% probability · 88th percentile
CISA KEV: Not listed
Weakness: CWE-264
Affected: microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8 · microsoft/windows 8.1 · microsoft/windows rt · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
Source: secure@microsoft.com

References

http://packetstormsecurity.com/files/133971/Windows-Sandboxed-Mount-Reparse-Point-Creation-Mitigation-Bypass.htmlThird Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033805Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-111Patch, Vendor Advisory
https://www.exploit-db.com/exploits/38474/Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/133971/Windows-Sandboxed-Mount-Reparse-Point-Creation-Mitigation-Bypass.htmlThird Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033805Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-111Patch, Vendor Advisory
https://www.exploit-db.com/exploits/38474/Exploit, Third Party Advisory, VDB Entry

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.