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Ubuntu 18.04 LTS: USN-4297-1 Critical: runc Privilege Escalation

ubuntu
Calendar Grey March 9, 2020
Dist Ubuntu Esm H88
Debian Advisory DSA-4723-1 outlines vulnerabilities in libc6 related to memory corruption and potential code execution.
Several security issues were fixed in runc.

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 escalate 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)

Topics%20covered

Topics Covered

security advisory access control ubuntu escalation runc

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

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

References

https://ubuntu.com/security/notices/USN-4297-1

CVE-2019-16884, CVE-2019-19921

Severity
critical
Lowest
Low
Medium
High
Critical

March 09, 2020

Topics%20covered

Topics Covered

security advisory access control ubuntu escalation runc

Package Information

https://launchpad.net/ubuntu/+source/runc/1.0.0~rc10-0ubuntu1~19.10.2
https://launchpad.net/ubuntu/+source/runc/1.0.0~rc10-0ubuntu1~18.04.2

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