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Gentoo GLSA-202003-21 High: runC Privilege Escalation Threat

gentoo
Calendar Grey March 15, 2020
Dist Gentoo Esm H88
Uncover severe weaknesses within runC that impact Gentoo systems, resulting in elevated permission levels and possible denial of service.
Multiple vulnerabilities have been discovered in runC, the worst of which may lead to privilege escalation.

Summary

Multiple vulnerabilities have been discovered in runC. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory denial of service gentoo privilege escalation high runC container escape

Resolution

All runC users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/runc-1.0.0_rc10"

References

[ 1 ] CVE-2019-16884 https://nvd.nist.gov/vuln/detail/CVE-2019-16884 [ 2 ] CVE-2019-19921 https://nvd.nist.gov/vuln/detail/CVE-2019-19921 [ 3 ] CVE-2019-5736 https://nvd.nist.gov/vuln/detail/CVE-2019-5736

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-21
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: runC: Multiple vulnerabilities
Date: March 15, 2020
Bugs: #677744, #709456, #711182
ID: 202003-21

Topics%20covered

Topics Covered

security advisory denial of service gentoo privilege escalation high runC container escape

Synopsis

Multiple vulnerabilities have been discovered in runC, the worst of which may lead to privilege escalation.

Background

RunC is a CLI tool for spawning and running containers according to the OCI specification.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/runc < 1.0.0_rc10 >= 1.0.0_rc10

Impact

===== An attacker, by running a malicious Docker image, could escape the container, bypass security restrictions, escalate privileges or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

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