CVE-2018-3760
There is an information leak vulnerability in Sprockets. Versions Affected: 4.0.0.beta7 and lower, 3.7.1 and lower, 2.12.4 and lower. Specially crafted requests can be used to access files that exists on the filesystem that is outside an application's root directory, when the Sprockets server is used in production. All users running an affected release should either upgrade or use one of the work arounds immediately.
02 / AFFECTED SOFTWARE
Affected packages
88 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
There is an information leak vulnerability in Sprockets. Versions Affected: 4.0.0.beta7 and lower, 3.7.1 and lower, 2.12.4 and lower. Specially crafted requests can be used to access files that exists on the filesystem that is outside an application's root directory, when the Sprockets server is used in production. All users running an affected release should either upgrade or use one of the work arounds immediately.
Specially crafted requests can be used to access files that exist on the filesystem that is outside an application's root directory, when the Sprockets server is used in production. All users running an affected release should either upgrade or use one of the work arounds immediately. ### Workaround: In Rails applications, work around this issue, set `config.assets.compile = false` and `config.public_file_server.enabled = true` in an initializer and precompile the assets. This work around will not be possible in all hosting environments and upgrading is advised.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2018:2244
- https://access.redhat.com/errata/RHSA-2018:2245
- https://access.redhat.com/errata/RHSA-2018:2561
- https://access.redhat.com/errata/RHSA-2018:2745
- https://github.com/rails/sprockets/commit/c09131cf5b2c479263939c8582e22b98ed616c5fhttps://github.com/rails/sprockets/commit/9c34fa05900b968d74f08ccf40917848a7be9441https://github.com/rails/sprockets/commit/18b8a7f07a50c245e9aee7854ecdbe606bbd8bb5
- https://groups.google.com/d/msg/rubyonrails-security/ft_J--l55fM/7roDfQ50BwAJ
- https://www.debian.org/security/2018/dsa-4242
- https://github.com/rails/sprockets
- https://github.com/rails/sprockets/commit/18b8a7f07a50c245e9aee7854ecdbe606bbd8bb5
- https://github.com/rails/sprockets/commit/9c34fa05900b968d74f08ccf40917848a7be9441
- https://github.com/rails/sprockets/commit/c09131cf5b2c479263939c8582e22b98ed616c5f
- https://nvd.nist.gov/vuln/detail/CVE-2018-3760