CVE-2023-42119 Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability

2024-05-0302:13:26

CWE-125

zdi

github.com

exim

dnsdb

out-of-bounds read

information disclosure

vulnerability

tcp port 25

arbitrary code

zdi-can-17643

CVSS3

3.1

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.6

Confidence

High

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the smtp service, which listens on TCP port 25 by default. 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 buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. Was ZDI-CAN-17643.

CNA Affected

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