What is the severity of ZDI-CAN-12302?

The severity of ZDI-CAN-12302 is critical due to the potential for remote code execution without authentication.

How do I fix ZDI-CAN-12302?

To fix ZDI-CAN-12302, upgrade ISC BIND to the latest version that addresses this vulnerability.

Who is affected by ZDI-CAN-12302?

ISC BIND 9 installations are affected by ZDI-CAN-12302.

Can ZDI-CAN-12302 be exploited remotely?

Yes, ZDI-CAN-12302 can be exploited remotely by attackers.

Is authentication required to exploit ZDI-CAN-12302?

No, authentication is not required to exploit ZDI-CAN-12302.

Vulnerability/
ZDI-CAN-12302

high

8.1

6/2/2025

ZDI-CAN-12302: ISC BIND TKEY Query Heap-based Buffer Overflow Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of ISC BIND. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of TKEY queries. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the "bind" user.

Affected Software	Affected Version	How to fix
BIND 9

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-CAN-12302?
The severity of ZDI-CAN-12302 is critical due to the potential for remote code execution without authentication.
How do I fix ZDI-CAN-12302?
To fix ZDI-CAN-12302, upgrade ISC BIND to the latest version that addresses this vulnerability.
Who is affected by ZDI-CAN-12302?
ISC BIND 9 installations are affected by ZDI-CAN-12302.
Can ZDI-CAN-12302 be exploited remotely?
Yes, ZDI-CAN-12302 can be exploited remotely by attackers.
Is authentication required to exploit ZDI-CAN-12302?
No, authentication is not required to exploit ZDI-CAN-12302.

agent/references
agent/softwarecombine
agent/title
agent/severity
agent/description
agent/type
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-21-195
alias/ZDI-CAN-12302
alias/CVE-2020-8625
agent/software-canonical-lookup
agent/software-canonical-lookup-request
agent/event
vendor/isc
canonical/bind 9

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Frequently Asked Questions

What is the severity of ZDI-CAN-12302?
The severity of ZDI-CAN-12302 is critical due to the potential for remote code execution without authentication.
How do I fix ZDI-CAN-12302?
To fix ZDI-CAN-12302, upgrade ISC BIND to the latest version that addresses this vulnerability.
Who is affected by ZDI-CAN-12302?
ISC BIND 9 installations are affected by ZDI-CAN-12302.
Can ZDI-CAN-12302 be exploited remotely?
Yes, ZDI-CAN-12302 can be exploited remotely by attackers.
Is authentication required to exploit ZDI-CAN-12302?
No, authentication is not required to exploit ZDI-CAN-12302.