Описание
Security update for rubygem-bundler
This update for rubygem-bundler fixes the following issues:
Updated to version 2.2.34.
-
CVE-2020-36327: Bundler chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen (bsc#1185842)
-
CVE-2021-43809: rubygem-bundler: remote execution via Gemfile argument injection (bsc#1193578)
Список пакетов
Container bci/ruby:2
Container suse/rmt-server:latest
Image SLES15-SP7-SAP-Azure
Image SLES15-SP7-SAP-Azure-3P
Image SLES15-SP7-SAP-BYOS-Azure
Image SLES15-SP7-SAP-BYOS-EC2
Image SLES15-SP7-SAP-BYOS-GCE
Image SLES15-SP7-SAP-EC2
Image SLES15-SP7-SAP-GCE
Image SLES15-SP7-SAP-GCE-3P
Image SLES15-SP7-SAP-Hardened-Azure
Image SLES15-SP7-SAP-Hardened-BYOS-Azure
Image SLES15-SP7-SAP-Hardened-BYOS-EC2
Image SLES15-SP7-SAP-Hardened-BYOS-GCE
Image SLES15-SP7-SAP-Hardened-GCE
SUSE Linux Enterprise Module for Basesystem 15 SP7
Ссылки
- Link for SUSE-SU-2026:1355-1
- E-Mail link for SUSE-SU-2026:1355-1
- SUSE Security Ratings
- SUSE Bug 1185842
- SUSE Bug 1193578
- SUSE CVE CVE-2020-36327 page
- SUSE CVE CVE-2021-43809 page
Описание
Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every "Dependency Confusion" issue in every product.
Затронутые продукты
Ссылки
- CVE-2020-36327
- SUSE Bug 1185842
Описание
`Bundler` is a package for managing application dependencies in Ruby. In `bundler` versions before 2.2.33, when working with untrusted and apparently harmless `Gemfile`'s, it is not expected that they lead to execution of external code, unless that's explicit in the ruby code inside the `Gemfile` itself. However, if the `Gemfile` includes `gem` entries that use the `git` option with invalid, but seemingly harmless, values with a leading dash, this can be false. To handle dependencies that come from a Git repository instead of a registry, Bundler uses various commands, such as `git clone`. These commands are being constructed using user input (e.g. the repository URL). When building the commands, Bundler versions before 2.2.33 correctly avoid Command Injection vulnerabilities by passing an array of arguments instead of a command string. However, there is the possibility that a user input starts with a dash (`-`) and is therefore treated as an optional argument instead of a positional one. This can lead to Code Execution because some of the commands have options that can be leveraged to run arbitrary executables. Since this value comes from the `Gemfile` file, it can contain any character, including a leading dash. To exploit this vulnerability, an attacker has to craft a directory containing a `Gemfile` file that declares a dependency that is located in a Git repository. This dependency has to have a Git URL in the form of `-u./payload`. This URL will be used to construct a Git clone command but will be interpreted as the upload-pack argument. Then this directory needs to be shared with the victim, who then needs to run a command that evaluates the Gemfile, such as `bundle lock`, inside. This vulnerability can lead to Arbitrary Code Execution, which could potentially lead to the takeover of the system. However, the exploitability is very low, because it requires a lot of user interaction. Bundler 2.2.33 has patched this problem by inserting `--` as an argument before any positional arguments to those Git commands that were affected by this issue. Regardless of whether users can upgrade or not, they should review any untrustred `Gemfile`'s before running any `bundler` commands that may read them, since they can contain arbitrary ruby code.
Затронутые продукты
Ссылки
- CVE-2021-43809
- SUSE Bug 1193578