CVE-2021-21819 Command injection in D-Link
A code execution vulnerability in the Libcli Test Environment of D-Link DIR-3040 routers allows attackers to execute arbitrary commands via crafted network requests.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-21819?
CVE-2021-21819 is a critical command injection vulnerability in D-Link, published on 16 Jul 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A code execution vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger this vulnerability.
Weakness: CWE-78
Which versions are affected by CVE-2021-21819?
It affects 1 product.
Products include Dlink Dir-3040 Firmware.
How do I fix CVE-2021-21819?
No fix has been published for CVE-2021-21819 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-21819 being exploited?
There is no known exploitation of CVE-2021-21819 in the wild and no public exploit code.
Other vulnerabilities in D-Link
- CVE-2021-21913 Hardcoded credentials in D-Link
- CVE-2021-21820 Hardcoded credentials in D-Link
- CVE-2022-44832 Command injection in n/a
- CVE-2023-41229 D-Link DIR-3040 HTTP Request Processing Referer Heap-Based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2022-43648 Memory corruption in DIR-3040
Sources
Also known as GHSA-chxw-2vjc-ppm6.