CVE-2023-42119

3.1 LOW
Published: May 03, 2024 Modified: November 03, 2025

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-1473/
Source: zdi-disclosures@trendmicro.com
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-1473/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.1 / 10.0
EPSS (Exploit Probability)
1.0%
76th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

exim