What is CVE-2021-45996?

CVE-2021-45996 is a vulnerability found in Tenda routers G1 and G3 v15.11.0.17(9502)_CN that allows attackers to cause a Denial of Service (DoS) through a stack overflow in the function formSetPortMapping.

What is the severity of CVE-2021-45996?

CVE-2021-45996 has a severity level of high with a CVSS score of 7.5.

How can attackers exploit CVE-2021-45996?

Attackers can exploit CVE-2021-45996 by sending malicious input to the vulnerable routers through the portMappingServer, portMappingProtocol, portMappingWan, portMappingInternal, and portMappingExte parameters, triggering a stack overflow and causing a Denial of Service (DoS) condition.

Which Tenda router models are affected by CVE-2021-45996?

The Tenda router models G1 and G3 with firmware version 15.11.0.17(9502)_CN are affected by CVE-2021-45996.

Is there a patch or fix available for CVE-2021-45996?

As of now, there is no specific patch or fix available for CVE-2021-45996. It is recommended to update the firmware of the affected Tenda routers to the latest version provided by the vendor when it becomes available.

Vulnerability/
CVE-2021-45996

high

7.8

CWE

787

4/2/2022

4/8/2024

CVE-2021-45996

First published: Fri Feb 04 2022(Updated: )

Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetPortMapping. This vulnerability allows attackers to cause a Denial of Service (DoS) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Tendacn G1 Firmware	=15.11.0.17\(9502\)_cn
Tendacn G1
Tendacn G3 Firmware	=15.11.0.17\(9502\)_cn
Tendacn G3

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Reference Links

https://github.com/pjqwudi/my_vuln/tree/main/Tenda/vuln_8

Frequently Asked Questions

What is CVE-2021-45996?
CVE-2021-45996 is a vulnerability found in Tenda routers G1 and G3 v15.11.0.17(9502)_CN that allows attackers to cause a Denial of Service (DoS) through a stack overflow in the function formSetPortMapping.
What is the severity of CVE-2021-45996?
CVE-2021-45996 has a severity level of high with a CVSS score of 7.5.
How can attackers exploit CVE-2021-45996?
Attackers can exploit CVE-2021-45996 by sending malicious input to the vulnerable routers through the portMappingServer, portMappingProtocol, portMappingWan, portMappingInternal, and portMappingExte parameters, triggering a stack overflow and causing a Denial of Service (DoS) condition.
Which Tenda router models are affected by CVE-2021-45996?
The Tenda router models G1 and G3 with firmware version 15.11.0.17(9502)_CN are affected by CVE-2021-45996.
Is there a patch or fix available for CVE-2021-45996?
As of now, there is no specific patch or fix available for CVE-2021-45996. It is recommended to update the firmware of the affected Tenda routers to the latest version provided by the vendor when it becomes available.

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agent/last-modified-date
agent/softwarecombine
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collector/mitre-cve
source/MITRE
vendor/tendacn
canonical/tendacn g1 firmware
version/tendacn g1 firmware/15.11.0.17\(9502\)_cn
canonical/tendacn g1
canonical/tendacn g3 firmware
version/tendacn g3 firmware/15.11.0.17\(9502\)_cn
canonical/tendacn g3

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