Buffer Overflow Vulnerability in D-Link DIR-816 Router Firmware
CVE-2022-37134

9.8CRITICAL

Key Information:

Vendor
D-Link
Status
Dir-816 Firmware
Vendor
CVE Published:
22 August 2022

Summary

The D-Link DIR-816 router has a buffer overflow vulnerability that allows attackers to exploit the /goform/form2Wan.cgi interface. When the 'wantype' parameter is set to 3, the L2TP username is processed and decrypted using base64, which is then stored without sufficient size checks. This oversight can lead to a stack overflow, potentially allowing attackers to execute arbitrary code or take control of the device. It is crucial for users to apply necessary patches or updates to mitigate the risk associated with this vulnerability.

References

https://www.dlink.com/en/security-bulletin/
x_refsource_MISC
https://github.com/z1r00/IOT_Vul/blob/main/dlink/Dir816/f...
x_refsource_MISC

EPSS Score

25% chance of being exploited in the next 30 days.

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

.