CVE-2021-30465

8.5HIGH

Key Information:

Vendor
Linux
Status
Runc
Vendor
CVE Published:
27 May 2021

Summary

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

References

https://github.com/opencontainers/runc/releases
http://www.openwall.com/lists/oss-security/2021/05/19/2
mailing-list
http://www.openwall.com/lists/oss-security/2021/05/19/2

CVSS V3.1

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.