Race Condition Affecting runc package, versions <0:1.0.0-1.rc2.el7


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-RHEL7-RUNC-5039949
  • published27 Mar 2023
  • disclosed11 Jan 2017

Introduced: 11 Jan 2017

CVE-2016-9962  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade RHEL:7 runc to version 0:1.0.0-1.rc2.el7 or higher.
This issue was patched in RHSA-2017:0127.

NVD Description

Note: Versions mentioned in the description apply only to the upstream runc package and not the runc package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes during the initialization and can lead to container escapes or modification of runC state before the process is fully placed inside the container.

References

CVSS Scores

version 3.1