Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bundler | Bundler | >= 1.16.0, < 2.2.10 |
| Fedoraproject | Fedora | 34 |
| Microsoft | Package Manager Configurations | - |
References
- https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priVendor Advisory
- https://github.com/rubygems/rubygems/issues/3982ExploitIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- 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-2021-24105PatchVendor Advisory
- https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confuExploitThird Party Advisory
- https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priVendor Advisory
- https://github.com/rubygems/rubygems/issues/3982ExploitIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- 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-2021-24105PatchVendor Advisory
- https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confuExploitThird Party Advisory
FAQ
What is CVE-2020-36327?
CVE-2020-36327 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 chose...
How severe is CVE-2020-36327?
CVE-2020-36327 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-36327?
Check the references section above for vendor advisories and patch information. Affected products include: Bundler Bundler, Fedoraproject Fedora, Microsoft Package Manager Configurations.