CVE-2018-1000073 RubyGems Link Following vulnerability

What is CVE-2018-1000073?

CVE-2018-1000073 is a high-severity path traversal vulnerability in n/a, published on 13 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

RubyGems 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.

Weakness: CWE-59

Which versions are affected by CVE-2018-1000073?

4 open source packages ship an affected version, including org.jruby:jruby-stdlib and rubygems-update. It affects 1 product.

Products include Rubygems Rubygems.

How do I fix CVE-2018-1000073?

Upgrade org.jruby:jruby-stdlib to 9.1.16.0 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2018-1000073 being exploited?

There is no known exploitation of CVE-2018-1000073 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2022-36073 RubyGems allows creation of users with arbitrary unverified emails High 8.3
• CVE-2018-1000074 RubyGems Deserialization of Untrusted Data vulnerability High 7.8
• CVE-2019-8320 RubyGems Delete directory using symlink when decompressing tar High 7.4
• CVE-2012-2125 RubyGems HTTPS to HTTP redirect Medium 5.8
• CVE-2018-1000079 RubyGems Path Traversal vulnerability Medium 5.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-1000073, GHSA-gx69-6cp4-hxrj, UBUNTU-CVE-2018-1000073.