Null Pointer Dereference Vulnerability in D-Link DIR-825 Router
CVE-2021-29296

7.5HIGH

Key Information:

Vendor

D-Link
Status
Dir-825 Firmware
Vendor
CVE Published:
10 August 2021

What is CVE-2021-29296?

A null pointer dereference vulnerability exists in the D-Link DIR-825 router, specifically in version 2.10b02. This flaw allows a remote attacker to craft a specific HTTP request targeting the URL '/vct_wan', which triggers the device's httpd service to process a null argument in the strchr function. This erroneous action results in a segmentation fault, leading to a denial of service condition. Given that the DIR-825 model has reached its end-of-life status, no patch will be available to rectify this issue.

References

https://www.dlink.com/en/security-bulletin/
x_refsource_MISC
https://supportannouncement.us.dlink.com/announcement/pub...
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

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CVE-2021-29296 : Null Pointer Dereference Vulnerability in D-Link DIR-825 Router