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zdiAnonymousZDI-23-1470
HistorySep 27, 2023 - 12:00 a.m.

(0Day) Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability

2023-09-2700:00:00
Anonymous
www.zerodayinitiative.com
68
(remote code execution
exim
ntlm challenge)

0.001 Low

EPSS

Percentile

28.8%

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.