CVE-2023-42114
exim4 - security update
Description
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.
How to fix CVE-2023-42114
To remediate CVE-2023-42114, upgrade the affected package to a fixed version below.
- —upgrade to 4.94.2-7+deb11u1 or later
- —upgrade to 4.92-8+deb10u8 or later
- —upgrade to 4.94.2-7+deb11u1 or later
Is CVE-2023-42114 being exploited?
Moderate — EPSS is 13.9%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 4.94.2-7+deb11u1
- from 0, < 4.92-8+deb10u8
- from 0, < 4.94.2-7+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |