CVE-2017-16932: Infinite recursion in parameter entities

November 23, 2017 (updated October 2, 2019)

The library libxml2, which is included in nokogiri, incorrectly handles certain parameter entities. An attacker can leverage this with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.

References

cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16932
github.com/sparklemotion/nokogiri/issues/1714
people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-16932.html
usn.ubuntu.com/usn/usn-3504-1/

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