CVE-2020-26247
Severity CVSS v4.0:
Pending analysis
Type:
CWE-611
Improper Restriction of XML External Entity Reference ('XXE')
Publication date:
30/12/2020
Last modified:
19/10/2022
Description
Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.
Impact
Base Score 3.x
4.30
Severity 3.x
MEDIUM
Base Score 2.0
4.00
Severity 2.0
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* | 1.11.0 (excluding) | |
| cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc1:*:*:*:ruby:*:* | ||
| cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc2:*:*:*:ruby:*:* | ||
| cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc3:*:*:*:ruby:*:* | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b
- https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m
- https://hackerone.com/reports/747489
- https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html
- https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html
- https://rubygems.org/gems/nokogiri
- https://security.gentoo.org/glsa/202208-29