Wings is Pterodactyl's server control plane. This vulnerability can be used to delete files and directories recursively on the host system. This vulnerability can be combined with GHSA-p8r3-83r8-jwj5 to overwrite files on the host system. In order to use this exploit, an attacker must have an existing "server" allocated and controlled by Wings. This vulnerability has been resolved in version v1.11.4 of Wings, and has been back-ported to the 1.7 release series in v1.7.4. Anyone running v1.11.x should upgrade to v1.11.4 and anyone running v1.7.x should upgrade to v1.7.4. There are no known workarounds for this issue.

Impact

This vulnerability impacts anyone running the affected versions of Wings. This vulnerability can be used to gain access to the host system running Wings if a user is able to modify an server's install script or the install script executes code supplied by the user (either through environment variables, or commands that execute commands based off of user data).

Patches

This vulnerability has been resolved in version v1.11.6 of Wings, and has been back-ported to the 1.7 release series in v1.7.5.

Anyone running v1.11.x should upgrade to v1.11.6 and anyone running v1.7.x should upgrade to v1.7.5.

Workarounds

Running Wings with a rootless container runtime may mitigate the severity of any attacks, however the majority of users are using container runtimes that run as root as per our documentation.

SELinux may prevent attackers from performing certain operations against the host system, however privileged containers have a lot of freedom even on systems with SELinux enabled.

TL;DR: None at this time.

Extra details

It should be noted that this was a known attack vector, for attackers to easily exploit this attack it would require compromising an administrator account on a Panel. However, certain eggs (the data structure that holds the install scripts that get passed to Wings) have an issue where they are unknowingly executing shell commands with escalated privileges provided by untrusted user data.

Wings is Pterodactyl's server control plane. Affected versions are subject to a vulnerability which can be used to create new files and directory structures on the host system that previously did not exist, potentially allowing attackers to change their resource allocations, promote their containers to privileged mode, or potentially add ssh authorized keys to allow the attacker access to a remote shell on the target machine. In order to use this exploit, an attacker must have an existing "server" allocated and controlled by the Wings Daemon. This vulnerability has been resolved in version v1.11.3 of the Wings Daemon, and has been back-ported to the 1.7 release series in v1.7.3. Anyone running v1.11.x should upgrade to v1.11.3 and anyone running v1.7.x should upgrade to v1.7.3. There are no known workarounds for this vulnerability.

Workarounds

None at this time.