CVE-2023-42115 Common Vulnerabilities and Exposures

Upstream information

CVE-2023-42115 at MITRE

Description

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. 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 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 write past the end of a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.
. Was ZDI-CAN-17434.

Upstream Security Advisories:

https://www.zerodayinitiative.com/advisories/ZDI-23-1469/

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail	CNA (ZDI)
Base Score	9.8
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality Impact	High
Integrity Impact	High
Availability Impact	High
CVSSv3 Version	3

SUSE Bugzilla entry: 1215785 [RESOLVED / FIXED]

SUSE Security Advisories:

openSUSE-SU-2023:0293-1, published Thu Oct 5 16:45:15 2023
openSUSE-SU-2024:0007-1, published Thu Jan 4 04:52:00 2024

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Package Hub 15 SP4	`exim >= 4.94.2-bp154.2.6.1` `eximon >= 4.94.2-bp154.2.6.1` `eximstats-html >= 4.94.2-bp154.2.6.1`	Patchnames: openSUSE-2023-293
SUSE Package Hub 15 SP5	`exim >= 4.97.1-bp155.5.9.1` `eximon >= 4.97.1-bp155.5.9.1` `eximstats-html >= 4.97.1-bp155.5.9.1`	Patchnames: openSUSE-2023-293 openSUSE-2024-7
openSUSE Leap 15.4	`exim >= 4.94.2-bp154.2.6.1` `eximon >= 4.94.2-bp154.2.6.1` `eximstats-html >= 4.94.2-bp154.2.6.1`	Patchnames: openSUSE-2023-293
openSUSE Leap 15.5	`exim >= 4.97.1-bp155.5.9.1` `eximon >= 4.97.1-bp155.5.9.1` `eximstats-html >= 4.97.1-bp155.5.9.1`	Patchnames: openSUSE-2023-293 openSUSE-2024-7
openSUSE Tumbleweed	`exim >= 4.96.1-1.1` `eximon >= 4.96.1-1.1` `eximstats-html >= 4.96.1-1.1`	Patchnames: openSUSE-Tumbleweed-2024-13282

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s)	Source package	State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 SP4	exim	Released
SUSE Package Hub 15 SP5	exim	Released

SUSE Timeline for this CVE

CVE page created: Thu Sep 28 02:00:28 2023
CVE page last modified: Thu Dec 11 17:22:59 2025