CVE-2020-1112 Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability
An attacker with upload permissions can exploit improper file validation in Windows BITS to upload restricted files, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-1112?
CVE-2020-1112 is a high-severity vulnerability in Microsoft Windows 10, published on 21 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) IIS module improperly handles uploaded content. An attacker who successfully exploited this vulnerability could upload restricted file types to an IIS-hosted folder. To exploit this vulnerability, an attacker would require permissions to upload files via BITS. An attacker could then submit a specially crafted request to upload a file. The security update addresses the vulnerability by correcting how Windows BITS validates file names.
Weakness: CWE-434
Which versions are affected by CVE-2020-1112?
It affects 8 products.
Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 2 more.
How do I fix CVE-2020-1112?
No fix has been published for CVE-2020-1112 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-1112 being exploited?
There is no known exploitation of CVE-2020-1112 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2015-2426 Microsoft Windows Adobe Type Manager Library Remote Code Execution
- CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation
- CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability
- CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability
- CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-2p7m-73cj-2m99.