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CVE-2019-16884

Publication date 25 September 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

runc through 1.0.0-rc8, as used in Docker through 19.03.2-ce and other products, allows AppArmor restriction bypass because libcontainer/rootfs_linux.go incorrectly checks mount targets, and thus a malicious Docker image can mount over a /proc directory.

From the Ubuntu Security Team

It was discovered that runC incorrectly implemented AppArmor restrictions. An attacker could possibly use this issue to mount malicious images.

Status

Package Ubuntu Release Status
runc 22.04 LTS jammy
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
21.10 impish
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
21.04 hirsute
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
20.10 groovy
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
20.04 LTS focal
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
19.10 eoan
Fixed 1.0.0~rc8+git20190923.3e425f80-0ubuntu1
19.04 disco Ignored end of life
18.04 LTS bionic
Fixed 1.0.0~rc10-0ubuntu1~18.04.2
16.04 LTS xenial
14.04 LTS trusty Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
runc

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

Other references