CVE-2019-1163 Windows File Signature Security Feature Bypass Vulnerability

Medium 5.5 Published Updated

Attackers can inject malicious code into signed CAB files without invalidating signatures, bypassing Windows security checks to execute code.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2019-1163?

CVE-2019-1163 is a medium-severity vulnerability in Microsoft Windows 10, published on 14 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A security feature bypass exists when Windows incorrectly validates CAB file signatures. An attacker who successfully exploited this vulnerability could inject code into a CAB file without invalidating the file's signature. To exploit the vulnerability, an attacker could modify a signed CAB file and inject malicious code. The attacker could then convince a target user to execute the file. The update addresses the vulnerability by correcting how Windows validates file signatures.

Weakness: CWE-354

Which versions are affected by CVE-2019-1163?

It affects 3 products.

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

How do I fix CVE-2019-1163?

No fix has been published for CVE-2019-1163 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-1163 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-1163 exists.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-c3q8-2rfg-gpqv.

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