CVE-2019-5736

Publication date 11 February 2019

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
docker.io	19.04 disco	Not affected
	18.10 cosmic	Fixed 18.06.1-0ubuntu1.2
	18.04 LTS bionic	Fixed 18.06.1-0ubuntu1.2~18.04.1
	16.04 LTS xenial	Fixed 18.06.1-0ubuntu1.2~16.04.1
	14.04 LTS trusty	Not in release
runc	19.04 disco	Not affected
	18.10 cosmic	Fixed 1.0.0~rc4+dfsg1-6ubuntu0.18.10.1
	18.04 LTS bionic	Fixed 1.0.0~rc4+dfsg1-6ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1
	14.04 LTS trusty	Not in release

Severity score breakdown

Parameter	Value
Base score	8.6 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)