USN-4297-1: runC vulnerabilities

USN-4297-1: runC vulnerabilities

runc vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 19.10
• Ubuntu 18.04 LTS

Summary

Several security issues were fixed in runc.

Software Description

• runc – Open Container Project

Details

It was discovered that runC incorrectly checked mount targets. An attacker
with a malicious container image could possibly mount over the /proc
directory and excalate privileges. This issue only affected Ubuntu 18.04
LTS. (CVE-2019-16884)

It was discovered that runC incorrectly performed access control. An
attacker could possibly use this issue to escalate privileges.
(CVE-2019-19921)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10

runc – 1.0.0~rc10-0ubuntu1~19.10.2

Ubuntu 18.04 LTS

runc – 1.0.0~rc10-0ubuntu1~18.04.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

• CVE-2019-16884
• CVE-2019-19921

Source: USN-4297-1: runC vulnerabilities