Stack Buffer Overflow Vulnerability in D-Link DIR-809 Devices
CVE-2021-33270

9.8CRITICAL

Key Information:

Vendor

D-Link
Status
Dir-809 Firmware
Vendor
CVE Published:
1 December 2021

What is CVE-2021-33270?

The D-Link DIR-809 devices, when operating on outdated firmware versions, are susceptible to a stack buffer overflow vulnerability. This flaw resides in the function FUN_800462c4 located in /formAdvFirewall, which can be exploited through a specially crafted POST request. Successful exploitation of this vulnerability may allow an attacker to execute arbitrary code or disrupt the device's normal operation, posing significant risks to network security.

References

https://www.dlink.com/en/security-bulletin/
x_refsource_MISC
https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR8...
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

.