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 v3.0 8.8 HIGH
CVSS v2.0 9.3 HIGH

8.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105	Patch Vendor Advisory
https://github.com/rubygems/rubygems/issues/3982	Exploit Issue Tracking Third Party Advisory
https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html	Vendor Advisory
https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/	Third Party Advisory
https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/	Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:bundler:bundler::::::ruby::*
	cpe:2.3:a:bundler:bundler::::::ruby::*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:a:microsoft:package_manager_configurations:-:*:*:*:*:*:*:*

Information

Published : 2021-04-28 20:15

Updated : 2022-04-05 11:06

NVD link : CVE-2020-36327

Mitre link : CVE-2020-36327

JSON object : View

CWE

NVD-CWE-noinfo

Products Affected

bundler

bundler

fedoraproject

fedora

microsoft

package_manager_configurations

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8.8 /10