CVE-2020-36327
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.
- CVSS 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 6.3% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-25)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bundler:bundler
- fedoraproject:fedora
- microsoft:package_manager_configurations
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fp4w-jxhp-m23p | RubyGems | bundler | >=1.16.0 <2.2.10 | 2.2.10 |
| GHSA-fp4w-jxhp-m23p | RubyGems | bundler | >=2.2.11 <2.2.18 | 2.2.18 |
References
- https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html
- https://github.com/rubygems/rubygems/issues/3982
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/
- https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105