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Debian LTS: Security Advisory for ruby-nokogiri (DLA-2678-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'ruby-nokogiri' package(s) announced via the DLA-2678-1 advisory.
Insight
Insight
An XXE vulnerability was found in Nokogiri, a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. XML Schemas parsed by Nokogiri::XML::Schema were trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. The new default behavior is to treat all input as untrusted. The upstream advisory provides further information how to mitigate the problem or restore the old behavior again.
Affected Software
Affected Software
'ruby-nokogiri' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, this problem has been fixed in version 1.6.8.1-1+deb9u1. We recommend that you upgrade your ruby-nokogiri packages.