CVE-2021-34830

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1330 1.13B01 BETA routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the Cookie HTTP header. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-12028.

References

Link	Tags
https://www.zerodayinitiative.com/advisories/ZDI-21-682/	vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-34830?: CVE-2021-34830 has been scored as a high severity vulnerability.
How to fix CVE-2021-34830?: To fix CVE-2021-34830, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34830 being actively exploited in the wild?: It is possible that CVE-2021-34830 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34830?: CVE-2021-34830 affects D-Link DAP-1330.

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Description

Category

CWE-121 – Stack-based Buffer Overflow

References

Frequently Asked Questions