CVE-2019-5477

 

Published at: - 16-08-2019 06:15

Last modified: - 14-10-2022 08:46

Total changes: - 3

Description

A command injection vulnerability in Nokogiri v1.10.3 and earlier allows commands to be executed in a subprocess via Ruby's `Kernel.open` method. Processes are vulnerable only if the undocumented method `Nokogiri::CSS::Tokenizer#load_file` is being called with unsafe user input as the filename. This vulnerability appears in code generated by the Rexical gem versions v1.0.6 and earlier. Rexical is used by Nokogiri to generate lexical scanner code for parsing CSS queries. The underlying vulnerability was addressed in Rexical v1.0.7 and Nokogiri upgraded to this version of Rexical in Nokogiri v1.10.4.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://hackerone.com/reports/650835
• https://github.com/tenderlove/rexical/blob/master/CHANGELOG.rdoc
• https://github.com/sparklemotion/nokogiri/issues/1915
• [debian-lts-announce] 20190926 [SECURITY] [DLA 1933-1] ruby-nokogiri security update-Mailing List, Third Party Advisory
• USN-4175-1-Third Party Advisory
• GLSA-202006-05-Third Party Advisory
• [debian-lts-announce] 20221012 [SECURITY] [DLA 3149-1] ruby-nokogiri security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20221012 [SECURITY] [DLA 3150-1] rexical security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2019-5477

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures