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Escape to host from installation container

Critical
matthewpi published GHSA-p744-4q6p-hvc2 May 10, 2023

Package

gomod github.com/pterodactyl/wings (Go)

Affected versions

< 1.7.4, 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5

Patched versions

1.7.5, 1.11.6

Description

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.

Severity

Critical
9.0
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVE ID

No known CVE

Weaknesses

Credits