CVE-2019-13917

Publication date 25 July 2019

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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

Show unmaintained releases

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)

USN-4075-1
Exim vulnerability
25 July 2019