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CVE-2019-5477 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/sparklemotion/nokogiri/issues/1915 CVEPatchThird Party Advisory
https://github.com/tenderlove/rexical/blob/master/CHANGELOG.rdoc CVERelease Notes
https://hackerone.com/reports/650835 CVEPermissions Required
https://lists.debian.org/debian-lts-announce/2019/09/msg00027.html CVEMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html CVEMailing ListThird Party Advisory

see all 16 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')[email protected]
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')[email protected]

Affected Products

ProductVersions
nokogiri nokogiri
<= 1.10.3

CPE

  • cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
canonical ubuntu linux
16.04
18.04
19.04
19.10

CPE

  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
8.0
10.0

CPE

  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

12 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2019-5477
NVD Published Date:
Aug 16, 2019
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2019-5477 Details - Not Deferred