Stack Overflow Vulnerability in Tenda Routers G1 and G3
CVE-2021-45989

7.5HIGH

Key Information:

Vendor

Tenda
Status
G1 Firmware
Vendor
CVE Published:
4 February 2022

What is CVE-2021-45989?

The Tenda G1 and G3 routers contain a vulnerability that allows for a stack overflow in the guestWifiRuleRefresh function. By exploiting this issue through specific parameters such as qosGuestUpstream and qosGuestDownstream, an attacker can disrupt the normal functioning of the device, leading to a Denial of Service (DoS) condition. This poses a significant risk to users relying on these routers for stable network performance.

References

https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-45989 : Stack Overflow Vulnerability in Tenda Routers G1 and G3