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RubyGems Regular Expression Denial of Service vulnerability

Moderate severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Aug 16, 2023

Package

bundler rubygems-update (RubyGems)

Affected versions

< 1.8.23.1
>= 1.8.24, < 1.8.26
>= 2.0.0, < 2.0.8
>= 2.1.0.rc.1, < 2.1.0

Patched versions

1.8.23.1
1.8.26
2.0.8
2.1.0

Description

Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.

References

Published by the National Vulnerability Database Oct 17, 2013
Published to the GitHub Advisory Database May 14, 2022
Reviewed Mar 8, 2023
Last updated Aug 16, 2023

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(83rd percentile)

Weaknesses

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Learn more on MITRE.

CVE ID

CVE-2013-4287

GHSA ID

GHSA-9j7m-rjqx-48vh

Source code

No known source code
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