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CVE-2022-24769— Moby 权限许可和访问控制问题漏洞

一分钟漏洞结论

影响对象
moby moby
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Moby是一个开源项目，旨在推动软件的容器化，并帮助生态系统使容器技术主流化。 Moby 20.10.14 之前版本存在权限许可和访问控制问题漏洞，该漏洞源于容器使用非空的可继承 Linux 进程功能错误地启动，从而导致绕过安全限制和权限提升。攻击者可以通过默认可继承功能绕过容器的限制，以提升其权限。

CVSS 5.9 · Medium EPSS 0.49% · P40
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一、 漏洞 CVE-2022-24769 基础信息

漏洞信息
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Vulnerability Title
Default inheritable capabilities for linux container should be empty
来源: CVE Program / CVE List V5
Vulnerability Description
Moby is an open-source project created by Docker to enable and accelerate software containerization. A bug was found in Moby (Docker Engine) prior to version 20.10.14 where containers were incorrectly started with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during `execve(2)`. Normally, when executable programs have specified permitted file capabilities, otherwise unprivileged users and processes can execute those programs and gain the specified file capabilities up to the bounding set. Due to this bug, containers which included executable programs with inheritable file capabilities allowed otherwise unprivileged users and processes to additionally gain these inheritable file capabilities up to the container's bounding set. Containers which use Linux users and groups to perform privilege separation inside the container are most directly impacted. This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in Moby (Docker Engine) 20.10.14. Running containers should be stopped, deleted, and recreated for the inheritable capabilities to be reset. This fix changes Moby (Docker Engine) behavior such that containers are started with a more typical Linux environment. As a workaround, the entry point of a container can be modified to use a utility like `capsh(1)` to drop inheritable capabilities prior to the primary process starting.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
来源: CVE Program / CVE List V5
Vulnerability Title
Moby 权限许可和访问控制问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Moby是一个开源项目，旨在推动软件的容器化，并帮助生态系统使容器技术主流化。 Moby 20.10.14 之前版本存在权限许可和访问控制问题漏洞，该漏洞源于容器使用非空的可继承 Linux 进程功能错误地启动，从而导致绕过安全限制和权限提升。攻击者可以通过默认可继承功能绕过容器的限制，以提升其权限。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
moby moby < 20.10.14 -

二、漏洞 CVE-2022-24769 的公开POC

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三、漏洞 CVE-2022-24769 的情报信息

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CVE-2022-24769 补丁与修复 (1)

CVE-2022-24769 厂商安全公告 (1)

CVE-2022-24769 邮件列表归档 (7)

CVE-2022-24769 其他参考 (1)

IV. Related Vulnerabilities

Same product: moby
Same vendor: moby
Same weakness: CWE-732

V. Comments for CVE-2022-24769

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