Vulnerability Information
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Vulnerability Title
Non-interactive Tailscale SSH sessions on FreeBSD may use the effective group ID of the tailscaled process
Vulnerability Description
Tailscale is software for using Wireguard and multi-factor authentication (MFA). A vulnerability identified in the implementation of Tailscale SSH starting in version 1.34.0 and prior to prior to 1.38.2 in FreeBSD allows commands to be run with a higher privilege group ID than that specified in Tailscale SSH access rules. A difference in the behavior of the FreeBSD `setgroups` system call from POSIX meant that the Tailscale client running on a FreeBSD-based operating system did not appropriately restrict groups on the host when using Tailscale SSH. When accessing a FreeBSD host over Tailscale SSH, the egid of the tailscaled process was used instead of that of the user specified in Tailscale SSH access rules. Tailscale SSH commands may have been run with a higher privilege group ID than that specified in Tailscale SSH access rules if they met all of the following criteria: the destination node was a FreeBSD device with Tailscale SSH enabled; Tailscale SSH access rules permitted access for non-root users; and a non-interactive SSH session was used. Affected users should upgrade to version 1.38.2 to remediate the issue.
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N
Vulnerability Type
特权管理不恰当
Vulnerability Title
Tailscale 安全漏洞
Vulnerability Description
Tailscale是Tailscale开源的一款基于 WireGuard 的应用程序。可为任何规模的团队提供安全的专用网络。 Tailscale 1.38.2之前版本存在安全漏洞，该漏洞源于允许使用比 Tailscale SSH 访问规则指定的权限组 ID 更高的权限组 ID 运行命令。
CVSS Information
N/A
Vulnerability Type
N/A