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CVE-2020-2023:
Improper Privilege Management and Execution with Unnecessary Privileges in Kata Containers

9.8

CVSS Score

Basic Information

EPSS Score
-
Published
2/15/2022
Updated
2/1/2023
KEV Status
No
Technology
TechnologyGo

Technical Details

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Package NameEcosystemVulnerable VersionsFirst Patched Version
github.com/kata-containers/agentgo<= 1.91.9.1
github.com/kata-containers/agentgo>= 1.10.0, < 1.10.51.10.5
github.com/kata-containers/agentgo>= 1.11.0, < 1.11.11.11.1
github.com/kata-containers/runtimego<= 1.91.9.1
github.com/kata-containers/runtimego>= 1.10.0, < 1.10.51.10.5
github.com/kata-containers/runtimego>= 1.11.0, < 1.11.11.11.1

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability stems from missing device cgroup restrictions in container creation. The key patch adds updateDeviceCgroupForGuestRootfs() call in agentGRPC.CreateContainer, indicating this was the execution point where security controls were previously absent. The function signature matches the gRPC endpoint that would be invoked during container initialization, making it the primary vulnerable entry point visible in runtime traces.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

K*t* *ont*in*rs *o*sn't r*stri*t *ont*in*rs *rom ****ssin* t** *u*st's root *il*syst*m **vi**. M*li*ious *ont*in*rs **n *xploit t*is to **in *o** *x**ution on t** *u*st *n* m*squ*r*** *s t** k*t*-***nt. T*is issu* *****ts K*t* *ont*in*rs *.** v*rsion

Reasoning

T** vuln*r**ility st*ms *rom missin* **vi** **roup r*stri*tions in *ont*in*r *r**tion. T** k*y p*t** ***s up**t***vi****roup*or*u*stRoot*s() **ll in ***nt*RP*.*r**t**ont*in*r, in*i**tin* t*is w*s t** *x**ution point w**r* s**urity *ontrols w*r* pr*vi