CVE-2018-1000073

NameCVE-2018-1000073
DescriptionRubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1480-1, DSA-4219-1, DSA-4259-1
NVD severitymedium
Debian Bugs895778, 925986

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jruby (PTS)stretch1.7.26-1+deb9u1fixed
stretch (security)1.7.26-1+deb9u3fixed
bullseye, sid, buster9.1.17.0-3fixed
ruby2.3 (PTS)stretch2.3.3-1+deb9u8fixed
stretch (security)2.3.3-1+deb9u9fixed
ruby2.5 (PTS)buster, buster (security)2.5.5-3+deb10u2fixed
rubygems (PTS)sid3.2.0~rc.2-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jrubysourcewheezy(not affected)
jrubysourcejessie(not affected)
jrubysourcestretch1.7.26-1+deb9u1DSA-4219-1
jrubysource(unstable)9.1.17.0-2.1895778, 925986
ruby1.9.1sourcewheezy(not affected)
ruby1.9.1source(unstable)(unfixed)
ruby2.1sourcejessie2.1.5-2+deb8u5DLA-1480-1
ruby2.1source(unstable)(unfixed)
ruby2.3sourcestretch2.3.3-1+deb9u3DSA-4259-1
ruby2.3source(unstable)(unfixed)
ruby2.5source(unstable)2.5.0-5
rubygemssourcewheezy(not affected)
rubygemssource(unstable)3.2.0~rc.1-1

Notes

[wheezy] - ruby1.9.1 <not-affected> (Vulnerable code not present)
[wheezy] - rubygems <not-affected> (Vulnerable code not present)
[jessie] - jruby <not-affected> (Vulnerable code not present)
[wheezy] - jruby <not-affected> (Vulnerable code not present)
https://github.com/rubygems/rubygems/commit/1b931fc03b819b9a0214be3eaca844ef534175e2
https://www.ruby-lang.org/en/news/2018/02/17/multiple-vulnerabilities-in-rubygems/

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