How can remote attackers exploit CVE-2021-27710?

Remote attackers can exploit CVE-2021-27710 by sending a modified HTTP request, allowing them to execute arbitrary OS commands.

What is the severity of CVE-2021-27710?

The severity of CVE-2021-27710 is critical, with a severity value of 9.8.

How can I fix CVE-2021-27710?

To fix CVE-2021-27710, update the firmware of the TOTOLINK X5000R router to version 9.1.0u.6118_B20201102 or later, and update the firmware of the TOTOLINK A720R router to version 4.1.5cu.470_B20200911 or later.

Vulnerability/
CVE-2021-27710

critical

CWE

78 77

14/4/2021

3/8/2024

CVE-2021-27710: OS Command Injection

First published: Wed Apr 14 2021(Updated: )

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, "ip" parameter is directly passed to the attacker, allowing them to control the "ip" field to attack the OS.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Totolink X5000r Firmware	=9.1.0u.6118_b20201102
TOTOLINK X5000R
Totolink A720r Firmware	=4.1.5cu.470_b20200911
TOTOLINK A720R

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Reference Links

Frequently Asked Questions

What is CVE-2021-27710?
CVE-2021-27710 is a command injection vulnerability in the TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102 and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911.
How can remote attackers exploit CVE-2021-27710?
Remote attackers can exploit CVE-2021-27710 by sending a modified HTTP request, allowing them to execute arbitrary OS commands.
What is the severity of CVE-2021-27710?
The severity of CVE-2021-27710 is critical, with a severity value of 9.8.
Which TOTOLINK routers are affected by CVE-2021-27710?
TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102 and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 are affected by CVE-2021-27710.
How can I fix CVE-2021-27710?
To fix CVE-2021-27710, update the firmware of the TOTOLINK X5000R router to version 9.1.0u.6118_B20201102 or later, and update the firmware of the TOTOLINK A720R router to version 4.1.5cu.470_B20200911 or later.

collector/nvd-index
agent/weakness
agent/severity
agent/references
agent/author
agent/description
agent/type
agent/event
agent/first-publish-date
agent/softwarecombine
agent/last-modified-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/totolink
canonical/totolink x5000r firmware
version/totolink x5000r firmware/9.1.0u.6118_b20201102
canonical/totolink x5000r
canonical/totolink a720r firmware
version/totolink a720r firmware/4.1.5cu.470_b20200911
canonical/totolink a720r

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