CVE-2019-13917

Publication date 25 July 2019

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

Exim 4.85 through 4.92 (fixed in 4.92.1) allows remote code execution as root in some unusual configurations that use the ${sort } expansion for items that can be controlled by an attacker (e.g., $local_part or $domain).

Read the notes from the security team

Status

Package Ubuntu Release Status
exim4 19.04 disco
Fixed 4.92-4ubuntu1.2
18.04 LTS bionic
Fixed 4.90.1-1ubuntu1.3
16.04 LTS xenial
Fixed 4.86.2-2ubuntu2.4
14.04 LTS trusty
Not affected

Notes

mdeslaur

remote or local code execution as root with non-default configuration

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references