CVE-2023-42116

Upstream information

CVE-2023-42116 at MITRE

Description

Exim SMTP Challenge Stack-based Buffer Overflow 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 handling of NTLM challenge requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17515.

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Upstream Security Advisories:

• https://www.zerodayinitiative.com/advisories/ZDI-23-1470/

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

SUSE Bugzilla entry: 1215786 [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 GA exim-4.96.1-1.1

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SUSE Timeline for this CVE

CVE page created: Thu Sep 28 02:00:26 2023
CVE page last modified: Fri May 3 15:37:59 2024