What is ZDI-CAN-17554 vulnerability?

ZDI-CAN-17554 is a remote code execution vulnerability in Exim, which allows attackers to execute arbitrary code on affected installations without authentication.

How does ZDI-CAN-17554 vulnerability affect Exim?

ZDI-CAN-17554 affects the smtp service of Exim, which listens on TCP port 25 by default, allowing remote attackers to exploit the vulnerability.

How severe is ZDI-CAN-17554 vulnerability?

ZDI-CAN-17554 has a severity score of 8.1 (High).

Is authentication required to exploit ZDI-CAN-17554 vulnerability?

No, authentication is not required to exploit ZDI-CAN-17554 vulnerability.

Where can I find more information about ZDI-CAN-17554 vulnerability?

You can find more information about ZDI-CAN-17554 vulnerability on the Zero Day Initiative website: [http://www.zerodayinitiative.com/advisories/ZDI-23-1471/](http://www.zerodayinitiative.com/advisories/ZDI-23-1471/)

Vulnerability/
ZDI-CAN-17554

high

8.1

27/9/2023

16/1/2024

ZDI-CAN-17554: ZDI-23-1471: (0Day) Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability

First published: Wed Sep 27 2023(Updated: )

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

Affected Software	Affected Version	How to fix

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Frequently Asked Questions

What is ZDI-CAN-17554 vulnerability?
ZDI-CAN-17554 is a remote code execution vulnerability in Exim, which allows attackers to execute arbitrary code on affected installations without authentication.
How does ZDI-CAN-17554 vulnerability affect Exim?
ZDI-CAN-17554 affects the smtp service of Exim, which listens on TCP port 25 by default, allowing remote attackers to exploit the vulnerability.
How severe is ZDI-CAN-17554 vulnerability?
ZDI-CAN-17554 has a severity score of 8.1 (High).
Is authentication required to exploit ZDI-CAN-17554 vulnerability?
No, authentication is not required to exploit ZDI-CAN-17554 vulnerability.
Where can I find more information about ZDI-CAN-17554 vulnerability?
You can find more information about ZDI-CAN-17554 vulnerability on the Zero Day Initiative website: [http://www.zerodayinitiative.com/advisories/ZDI-23-1471/](http://www.zerodayinitiative.com/advisories/ZDI-23-1471/)

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