Description

Rubygems is a package registry used to supply software for the Ruby language ecosystem. Due to a bug in the yank action, it was possible for any RubyGems.org user to remove and replace certain gems even if that user was not authorized to do so. To be vulnerable, a gem needed: one or more dashes in its name creation within 30 days OR no updates for over 100 days At present, we believe this vulnerability has not been exploited. RubyGems.org sends an email to all gem owners when a gem version is published or yanked. We have not received any support emails from gem owners indicating that their gem has been yanked without authorization. An audit of gem changes for the last 18 months did not find any examples of this vulnerability being used in a malicious way. A deeper audit for any possible use of this exploit is ongoing, and we will update this advisory once it is complete. Using Bundler in --frozen or --deployment mode in CI and during deploys, as the Bundler team has always recommended, will guarantee that your application does not silently switch to versions created using this exploit. To audit your application history for possible past exploits, review your Gemfile.lock and look for gems whose platform changed when the version number did not change. For example, gemname-3.1.2 updating to gemname-3.1.2-java could indicate a possible abuse of this vulnerability. RubyGems.org has been patched and is no longer vulnerable to this issue as of the 5th of May 2022.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  7.5 HIGH

Vector:  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA:  GitHub, Inc.

Base Score:  9.9 CRITICAL

Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score:  6.0 MEDIUM

Vector:  (AV:N/AC:M/Au:S/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/rubygems/rubygems.org/security/advisories/GHSA-hccv-rwq6-vh79	Mitigation  Third Party Advisory
https://github.com/rubygems/rubygems.org/security/advisories/GHSA-hccv-rwq6-vh79	Mitigation  Third Party Advisory
https://hackerone.com/bugs?subject=rubygems&report_id=1559856	Permissions Required  Third Party Advisory
https://hackerone.com/bugs?subject=rubygems&report_id=1559856	Permissions Required  Third Party Advisory
https://security.netapp.com/advisory/ntap-20220616-0002/	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220616-0002/	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	NIST
CWE-862	Missing Authorization	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

CVE Modified by CVE 11/21/2024 1:58:38 AM

Action	Type	Old Value	New Value
Added	Reference		https://github.com/rubygems/rubygems.org/security/advisories/GHSA-hccv-rwq6-vh79
Added	Reference		https://hackerone.com/bugs?subject=rubygems&report_id=1559856
Added	Reference		https://security.netapp.com/advisory/ntap-20220616-0002/

CVE Modified by GitHub, Inc. 5/14/2024 6:29:56 AM

Action	Type	Old Value	New Value

Modified Analysis by NIST 2/10/2023 12:01:31 PM

Action	Type	Old Value	New Value
Changed	Reference Type	https://security.netapp.com/advisory/ntap-20220616-0002/ No Types Assigned	https://security.netapp.com/advisory/ntap-20220616-0002/ Third Party Advisory

CVE Modified by GitHub, Inc. 6/16/2022 11:15:09 AM

Action	Type	Old Value	New Value
Added	Reference		https://security.netapp.com/advisory/ntap-20220616-0002/ [No Types Assigned]

Initial Analysis by NIST 5/16/2022 11:49:57 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CVSS V2		NIST (AV:N/AC:M/Au:S/C:P/I:P/A:P)
Added	CWE		NIST CWE-863
Added	CPE Configuration		OR *cpe:2.3:a:rubygems:rubygems.org:-:*:*:*:*:*:*:*
Changed	Reference Type	https://github.com/rubygems/rubygems.org/security/advisories/GHSA-hccv-rwq6-vh79 No Types Assigned	https://github.com/rubygems/rubygems.org/security/advisories/GHSA-hccv-rwq6-vh79 Mitigation, Third Party Advisory
Changed	Reference Type	https://hackerone.com/bugs?subject=rubygems&report_id=1559856 No Types Assigned	https://hackerone.com/bugs?subject=rubygems&report_id=1559856 Permissions Required, Third Party Advisory