CVE-2023-42116

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.

Affected products

Alt Linux, Astra Linux, Exim, Linuxmint, Red Os, Ubuntu

Exim

< 4.96.1

Fix

Available

CVSS 3.1

9.8 CRITICAL

EPSS

3.2% (87th percentile)

Weakness

CWE-121

NVD status

Modified

Published

2024-05-03