Incorrect Access Control in runc Affects Container Security
CVE-2019-19921

7HIGH

Key Information:

Vendor

Linux
Status
Runc
Vendor
CVE Published:
12 February 2020

What is CVE-2019-19921?

The runc container runtime prior to version 1.0.0-rc10 is susceptible to an Incorrect Access Control flaw that can result in Privilege Escalation. Attackers can exploit this vulnerability by spawning two containers with custom volume-mount configurations and executing custom images. This poses a risk as it allows unauthorized access to resources and potential manipulation of the container environment. However, Docker is unaffected due to an implementation detail that mitigates the exploit.

References

https://github.com/opencontainers/runc/releases
https://security-tracker.debian.org/tracker/CVE-2019-19921
https://github.com/opencontainers/runc/issues/2197

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.