CVEvulnerability
CVE-2020-36327
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-04-29
- Last modified
- 2026-10-08
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Description
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.
Affected configurations
• bundler bundler (>= 1.16.0 < 2.2.10)
• bundler bundler (>= 2.2.11 <= 2.2.16)
• fedoraproject fedora 34
• microsoft package manager configurations
References
- https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html Vendor Advisory
- https://github.com/rubygems/rubygems/issues/3982 Exploit, Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/ lists.fedoraproject.org
- https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/ Third Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105 Patch, Vendor Advisory
- https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/ Exploit, Third Party Advisory
- https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html Vendor Advisory
- https://github.com/rubygems/rubygems/issues/3982 Exploit, Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/ lists.fedoraproject.org
- https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/ Third Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105 Patch, Vendor Advisory
- https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/ Exploit, Third Party Advisory