CVE-2019-1338 Security feature bypass in Windows
A man-in-the-middle attacker can bypass NTLMv2 protection in Microsoft Windows if LMv2 responses are sent, compromising authentication security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1338?
CVE-2019-1338 is a medium-severity vulnerability in Microsoft Windows 7, published on 10 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security feature bypass vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLMv2 protection if a client is also sending LMv2 responses, aka 'Windows NTLM Security Feature Bypass Vulnerability'.
Which versions are affected by CVE-2019-1338?
It affects 2 products.
Products include Microsoft Windows 7, Microsoft Windows Server 2008.
How do I fix CVE-2019-1338?
No fix has been published for CVE-2019-1338 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1338 being exploited?
There is no known exploitation of CVE-2019-1338 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 7
- CVE-2015-1635 Microsoft HTTP.sys Remote Code Execution
- CVE-2015-2360 Microsoft Win32k Privilege Escalation
- CVE-2014-6324 Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation
- CVE-2014-6332 Microsoft Windows Object Linking & Embedding (OLE) Automation Array Remote Code Execution
- CVE-2014-4148 Microsoft Windows Remote Code Execution
Sources
Also known as GHSA-qm7q-vxj7-9xg3.