CVE-2021-1636 Microsoft SQL Elevation of Privilege Vulnerability
An attacker can exploit a SQL injection flaw in Microsoft SQL Server to elevate privileges within the database environment.
- 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-2021-1636?
CVE-2021-1636 is a high-severity SQL injection vulnerability in Microsoft Sql Server, published on 12 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Microsoft SQL Elevation of Privilege Vulnerability
Weakness: CWE-89
Which versions are affected by CVE-2021-1636?
It affects 1 product.
Products include Microsoft Sql Server.
How do I fix CVE-2021-1636?
No fix has been published for CVE-2021-1636 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2021-1636 being exploited?
There is no known exploitation of CVE-2021-1636 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Microsoft Sql Server
Sources
Also known as GHSA-hmh6-2fr5-6q37.