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CVE-2023-42114

Publication date 28 September 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
exim4 23.10 mantic
Fixed 4.96-17ubuntu2
23.04 lunar
Fixed 4.96-14ubuntu1.2
22.04 LTS jammy
Fixed 4.95-4ubuntu2.3
20.04 LTS focal
Fixed 4.93-13ubuntu1.8
18.04 LTS bionic
16.04 LTS xenial
14.04 LTS trusty

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Notes

eslerm

no security patches available, see ZDI's timeline

allenpthuang

patches now available, see the thread on Openwall