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RubyGems Cross-site Scripting vulnerability

Moderate severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Mar 10, 2023

Package

maven org.jruby:jruby-stdlib (Maven)

Affected versions

< 9.1.16.0

Patched versions

9.1.16.0
bundler rubygems-update (RubyGems)
< 2.7.6
2.7.6

Description

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack requires the victim to browse to a malicious gem on a vulnerable gem server. This vulnerability is fixed in 2.7.6.

References

Published by the National Vulnerability Database Mar 13, 2018
Published to the GitHub Advisory Database May 14, 2022
Reviewed Mar 10, 2023
Last updated Mar 10, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.376%
(72nd percentile)

Weaknesses

CVE ID

CVE-2018-1000078

GHSA ID

GHSA-87qx-g5wg-mwmj

Source code

No known source code
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