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Denial of service or RCE from libxml2 and libxslt

High severity GitHub Reviewed Published Sep 17, 2018 to the GitHub Advisory Database • Updated Jun 30, 2023

Package

bundler nokogiri (RubyGems)

Affected versions

>= 1.6.0, < 1.6.8

Patched versions

1.6.8

Description

Nokogiri is affected by series of vulnerabilities in libxml2 and libxslt, which are libraries Nokogiri depends on. It was discovered that libxml2 and libxslt incorrectly handled certain malformed documents, which can allow malicious users to cause issues ranging from denial of service to remote code execution attacks.

References

Published to the GitHub Advisory Database Sep 17, 2018
Reviewed Jun 16, 2020
Last updated Jun 30, 2023

Severity

High

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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

EPSS score

2.168%
(90th percentile)

Weaknesses

CVE ID

CVE-2015-8806

GHSA ID

GHSA-7hp2-xwpj-95jq

Source code

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