CVE-2021-21937 SQL injection in Advantech
An attacker can execute SQL commands via a crafted HTTP request in the host_alt_filter parameter, potentially accessing or modifying database contents.
- 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-2021-21937?
CVE-2021-21937 is a high-severity SQL injection vulnerability in Advantech, published on 22 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A specially-crafted HTTP request can lead to SQL injection. An attacker can make authenticated HTTP requests to trigger this vulnerability at ‘host_alt_filter’ parameter. This can be done as any authenticated user or through cross-site request forgery.
Weakness: CWE-89
Which versions are affected by CVE-2021-21937?
It affects 1 product.
Products include Advantech R-Seenet.
How do I fix CVE-2021-21937?
No fix has been published for CVE-2021-21937 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-2021-21937 being exploited?
There is no known exploitation of CVE-2021-21937 in the wild and no public exploit code.
Other vulnerabilities in Advantech
Sources
Also known as GHSA-7r2g-h6w6-6w7r.