漏洞信息
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Vulnerability Title
runc: LSM labels can be bypassed with malicious config using dummy procfs files
Vulnerability Description
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3.
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Vulnerability Type
CWE-61
Vulnerability Title
runc 安全漏洞
Vulnerability Description
runc是Open Container Initiative开源的一款用于根据OCI规范生成和运行容器的CLI(命令行界面)工具。 runc 1.2.7版本、1.3.2版本和1.4.0-rc.2版本存在安全漏洞,该漏洞源于攻击者可通过共享挂载的竞争容器误导写入操作,可能导致任意文件写入。
CVSS Information
N/A
Vulnerability Type
N/A