CVE-2020-2026— Kata Containers - Guests can trick the kata-runtime into mounting the container image on any host path
Quick assessment
Affected
Kata Containers Kata Containers
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Kata Containers是Kata Containers社区的一款开源的轻量级虚拟机构建程序。 Kata Containers 1.11.1之前的1.11版本、1.10.5之前的1.10版本和1.9及之前版本中存在后置链接漏洞。攻击者可利用该漏洞诱使kata runtime在任何主机路径上挂载不受信任的容器文件系统，进而在主机上执行代码。
Possible ATT&CK Techniques 3 AI
T1543 · Create or Modify System Process T1068 · Exploitation for Privilege Escalation T1610 · Deploy Container
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I. Basic Information for CVE-2020-2026
Vulnerability Information
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Vulnerability Title
Kata Containers - Guests can trick the kata-runtime into mounting the container image on any host path
Source: CVE Program / CVE List V5
Vulnerability Description
A malicious guest compromised before a container creation (e.g. a malicious guest image or a guest running multiple containers) can trick the kata runtime into mounting the untrusted container filesystem on any host path, potentially allowing for code execution on the host. This issue affects: Kata Containers 1.11 versions earlier than 1.11.1; Kata Containers 1.10 versions earlier than 1.10.5; Kata Containers 1.9 and earlier versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Kata Containers 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kata Containers是Kata Containers社区的一款开源的轻量级虚拟机构建程序。 Kata Containers 1.11.1之前的1.11版本、1.10.5之前的1.10版本和1.9及之前版本中存在后置链接漏洞。攻击者可利用该漏洞诱使kata runtime在任何主机路径上挂载不受信任的容器文件系统，进而在主机上执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Kata Containers | Kata Containers | 1.11 ~ 1.11.1 | - |
|
II. Public POCs for CVE-2020-2026
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2020-2026 (1)
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https://github.com/kata-containers/runtime/pull/2713 x_refsource_MISC
Mailing List Discussions for CVE-2020-2026 (5)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWACJQSMY5BVDMVTF3FBN7HZSOSFOG3Q/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P7FHA4AF6Y6PAVJBTTQPUEHXZQUOF3P/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JPBKAQBF3OR72N55GWM2TDYQP2OHK6H/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNJHSSPCKUGJDVXXIXK2JUWCRJDQX7CE/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6W5MKF7HSAIL2AX2BX6RV4WWVGUIKVLS/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2020-2026 (2)
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https://github.com/kata-containers/runtime/releases/tag/1.11.1 x_refsource_MISC
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https://github.com/kata-containers/runtime/issues/2712 x_refsource_MISC
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V. Comments for CVE-2020-2026
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