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THREATINT
PUBLISHED

CVE-2023-42116

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability



Description

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. 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 handling of NTLM challenge requests. 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 service account. . Was ZDI-CAN-17515.

Reserved 2023-09-06 | Published 2024-05-03 | Updated 2024-09-18 | Assigner zdi


HIGH: 8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-121: Stack-based Buffer Overflow

Product status

Default status
unknown

exim 4.95
affected

References

www.zerodayinitiative.com/advisories/ZDI-23-1470/ (ZDI-23-1470)

cve.org (CVE-2023-42116)

nvd.nist.gov (CVE-2023-42116)

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