CVE-2023-42114 Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability

2024-05-0302:13:22

CWE-125

zdi

github.com

exim

ntlm

out-of-bounds

read

information disclosure

vulnerability

remote attackers

validation

data structure

zdi-can-17433

3.7 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

3.5 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

28.9%

JSON

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.

CNA Affected

[
  {
    "vendor": "Exim",
    "product": "Exim",
    "versions": [
      {
        "version": "R.47.0.0 AutoCAD 2021 & R.47.0.0 AutoCAD LT 2021",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]