Dokku is a docker-powered platform as a service. In Dokku versions before 0.38.25, a user with app-level Dokku access and remote SSH access to execute docker-options commands can store arbitrary strings through the docker-options plugin, and those strings are later concatenated into DOCKER_ARGS and processed by Bash eval during build, deploy, or run operations. Shell command substitutions in the stored values are interpreted on the host, allowing arbitrary command execution with the privileges of the dokku operating-system user.
This issue is fixed in version 0.38.25.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/dokku/dokku/commit/1a376c362215a5c7044a08b3e3905b1a5fddc821
security-advisories@github.com
https://github.com/dokku/dokku/pull/8848
security-advisories@github.com
https://github.com/dokku/dokku/releases/tag/v0.38.25
security-advisories@github.com
https://github.com/dokku/dokku/security/advisories/GHSA-fccf-j7qf-2xp9
security-advisories@github.com