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The D-Link DIR-809 devices, when operating on outdated firmware versions, are susceptible to a stack buffer overflow vulnerability.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.

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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

JSON
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