Nokogiri 1.8.5 has been released.
This is a security and bugfix release. It addresses two CVEs in upstream
libxml2 rated as "medium" by Red Hat, for which details are below.
If you're using your distro's system libraries, rather than Nokogiri's
vendored libraries, there's no security need to upgrade at this time,
though you may want to check with your distro whether they've patched this
(Canonical has patched Ubuntu packages). Note that these patches are not
yet (as of 2018-10-04) in an upstream release of libxml2.
Full details about the security update are available in Github Issue
[#1785][].
[#1785]: https://github.com/sparklemotion/nokogiri/issues/1785
···
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# 1.8.5 / 2018-10-04
## Security Notes
[MRI] Pulled in upstream patches from libxml2 that address CVE-2018-14404
and CVE-2018-14567. Full details are available in #1785. Note that these
patches are not yet (as of 2018-10-04) in an upstream release of libxml2.
## Bug fixes
* [MRI] Fix regression in installation when building against system
libraries, where some systems would not be able to find libxml2 or libxslt
when present. (Regression introduced in v1.8.3.) [#1722]
* [JRuby] Fix node reparenting when the destination doc is empty. [#1773]
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CVE-2018-14404
Permalink:
https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-14404.html
Description:
A NULL pointer dereference vulnerability exists in the
xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing
an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.
Applications processing untrusted XSL format inputs with the use of the
libxml2 library may be vulnerable to a denial of service attack due to a
crash of the application
Canonical rates this vulnerability as "Priority: Medium"
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CVE-2018-14567
Permalink:
https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-14567.html
Description:
infinite loop in LZMA decompression
Canonical rates this vulnerability as "Priority: Medium"