CVE-2019-1074 Path traversal in Windows

Medium 5.5 Published Updated

An attacker can exploit symbolic link handling in local service folders to escalate privileges and access unauthorized information on Microsoft Windows.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-1074?

CVE-2019-1074 is a medium-severity path traversal vulnerability in Microsoft Windows 10, published on 15 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An elevation of privilege vulnerability exists in Microsoft Windows where certain folders, with local service privilege, are vulnerable to symbolic link attack. An attacker who successfully exploited this vulnerability could potentially access unauthorized information. The update addresses this vulnerability by not allowing symbolic links in these scenarios., aka 'Microsoft Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1082.

Weakness: CWE-59

Which versions are affected by CVE-2019-1074?

It affects 3 products.

Products include Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019.

How do I fix CVE-2019-1074?

No fix has been published for CVE-2019-1074 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2019-1074 being exploited?

There is no known exploitation of CVE-2019-1074 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-4vv7-rw65-fcg2.

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