CVE-2023-42114

Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information 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 user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this vulnerability to disclose information in the context of the service account. . Was ZDI-CAN-17433.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-23-1468/	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-1468/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*

History

07 Aug 2025, 17:33

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~3.7~~	v2 : unknown v3 : 5.3
CPE		cpe:2.3:a:exim:exim::::::::
First Time		Exim exim Exim
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-23-1468/ -~~	() https://www.zerodayinitiative.com/advisories/ZDI-23-1468/ - Third Party Advisory

Information

Published : 2024-05-03 03:15

Updated : 2025-08-07 17:33

NVD link : CVE-2023-42114

Mitre link : CVE-2023-42114

CVE.ORG link : CVE-2023-42114

JSON object : View

Products Affected

exim

exim

CWE

CWE-125

Out-of-bounds Read

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