Vulnerability identifier: #VU15271

Vulnerability risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-8411

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to the FSCTL_FIND_FILES_BY_SID control code within NTFS filesystem improperly checks for access permissions to list a directory, when Quotas are configured. A local unprivileged user can run a specially crafted application and gain elevated privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 8.1 RT, 7, 10 - 10 1809

Windows Server: 2008 - 2019 1803

---

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8411
http://packetstormsecurity.com/files/download/149824/GS20181016144101.tgz

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.