漏洞标题
通过Bubblewrap中的用户命名空间以setuid模式下的特权提升
漏洞描述信息
通过Bubblewrap中的用户命名空间以setuid模式提升权限
CVSS信息
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
漏洞类别
N/A
漏洞标题
Privilege escalation in setuid mode via user namespaces in Bubblewrap
漏洞描述信息
Bubblewrap (bwrap) before version 0.4.1, if installed in setuid mode and the kernel supports unprivileged user namespaces, then the `bwrap --userns2` option can be used to make the setuid process keep running as root while being traceable. This can in turn be used to gain root permissions. Note that this only affects the combination of bubblewrap in setuid mode (which is typically used when unprivileged user namespaces are not supported) and the support of unprivileged user namespaces. Known to be affected are: * Debian testing/unstable, if unprivileged user namespaces enabled (not default) * Debian buster-backports, if unprivileged user namespaces enabled (not default) * Arch if using `linux-hardened`, if unprivileged user namespaces enabled (not default) * Centos 7 flatpak COPR, if unprivileged user namespaces enabled (not default) This has been fixed in the 0.4.1 release, and all affected users should update.
CVSS信息
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
漏洞类别
特权API的不正确使用
漏洞标题
Bubblewrap 安全漏洞
漏洞描述信息
Bubblewrap是一套非特权沙盒工具。 Bubblewrap (bwrap) 0.4.1之前版本中存在安全漏洞。攻击者可利用该漏洞获取root权限。
CVSS信息
N/A
漏洞类别
其他