CVE-2021-27708 Command injection in n/a
Remote attackers can execute arbitrary OS commands on TOTOLINK routers via modified HTTP requests due to unsafe system function usage.
- 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-2021-27708?
CVE-2021-27708 is a critical command injection vulnerability in Totolink X5000r Firmware, published on 14 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, "command" parameter is directly passed to the attacker, allowing them to control the "command" field to attack the OS.
Weakness: CWE-78
Which versions are affected by CVE-2021-27708?
It affects 2 products.
Products include Totolink A720r Firmware, Totolink X5000r Firmware.
How do I fix CVE-2021-27708?
No fix has been published for CVE-2021-27708 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-2021-27708 being exploited?
There is no known exploitation of CVE-2021-27708 in the wild and no public exploit code.
Other vulnerabilities in Totolink X5000r Firmware
Sources
Also known as GHSA-x4fh-cj9q-q3x6.