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CVE-2022-37452

Published: 7 August 2022

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
exim4
Launchpad, Ubuntu, Debian
bionic
Released (4.90.1-1ubuntu1.9)
focal
Released (4.93-13ubuntu1.6)
jammy Not vulnerable
(4.95-4ubuntu2.1)
kinetic Not vulnerable

trusty
Released (4.82-3ubuntu2.4+esm4)
upstream
Released (4.94.2-5)
xenial
Released (4.86.2-2ubuntu2.6+esm2)
Patches:
upstream: https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H