Buffer Overflow Vulnerability in Tenda G1 and G3 Routers
CVE-2021-27706

9.8CRITICAL

Key Information:

Vendor

Tenda
Status
G1 Firmware
Vendor
CVE Published:
14 April 2021

What is CVE-2021-27706?

A buffer overflow vulnerability exists in Tenda G1 and G3 routers when processing crafted requests. The flaw arises in the 'formIPMacBindDel' function, where user-controlled input is passed to the 'strcpy' function without proper bounds checking. Exploiting this vulnerability could allow remote attackers to execute arbitrary code on the affected devices, posing significant risks to network security and user data.

References

https://hackmd.io/BhzJ4H20TjqKUiBrDOIKaw
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-27706 : Buffer Overflow Vulnerability in Tenda G1 and G3 Routers