Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Nokogiri: Command injection
Informations
Name GLSA-202006-05 First vendor Publication 2020-06-13
Vendor Gentoo Last vendor Modification 2020-06-13
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Nokogiri has a vulnerability allowing arbitrary execution of code if a certain function is used.

Background

Nokogiri is an HTML, XML, SAX, and Reader parser.

Description

A command injection vulnerability in Nokogiri allows commands to be executed in a subprocess by Ruby's Kernel.open method. Processes are vulnerable only if the undocumented method Nokogiri::CSS::Tokenizer#load_file is being passed untrusted user input.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process.

Workaround

Avoid calling the undocumented method Nokogiri::CSS::Tokenizer#load_file with untrusted user input.

Resolution

All Nokogiri users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-ruby/nokogiri-1.10.4"

References

[ 1 ] CVE-2019-5477 : https://nvd.nist.gov/vuln/detail/CVE-2019-5477
[ 2 ] Upstream bug https://github.com/sparklemotion/nokogiri/issues/1915

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/202006-05

Original Source

Url : http://security.gentoo.org/glsa/glsa-202006-05.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-78 Improper Sanitization of Special Elements used in an OS Command ('OS Command Injection') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2
Os 4
Os 2

Alert History

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Date Informations
2024-11-12 10:34:19
  • First insertion