| Name | CVE-2018-6914 |
| Description | Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1358-1, DLA-1359-1, DLA-1421-1, DSA-4259-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ruby2.1 (PTS) | jessie, jessie (lts) | 2.1.5-2+deb8u14 | fixed |
| ruby2.3 (PTS) | stretch (security) | 2.3.3-1+deb9u11 | fixed |
| stretch (lts), stretch | 2.3.3-1+deb9u12 | fixed | |
| ruby2.5 (PTS) | buster, buster (lts) | 2.5.5-3+deb10u7 | fixed |
| buster (security) | 2.5.5-3+deb10u6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ruby1.8 | source | wheezy | 1.8.7.358-7.1+deb7u6 | DLA-1359-1 | ||
| ruby1.8 | source | (unstable) | (unfixed) | |||
| ruby1.9.1 | source | wheezy | 1.9.3.194-8.1+deb7u8 | DLA-1358-1 | ||
| ruby1.9.1 | source | (unstable) | (unfixed) | |||
| ruby2.1 | source | jessie | 2.1.5-2+deb8u4 | DLA-1421-1 | ||
| ruby2.1 | source | (unstable) | (unfixed) | |||
| ruby2.3 | source | stretch | 2.3.3-1+deb9u3 | DSA-4259-1 | ||
| ruby2.3 | source | (unstable) | (unfixed) | |||
| ruby2.5 | source | (unstable) | 2.5.1-1 |
https://www.ruby-lang.org/en/news/2018/03/28/unintentional-file-and-directory-creation-with-directory-traversal-cve-2018-6914/
https://hackerone.com/reports/302298
Fixed by: https://github.com/ruby/ruby/commit/10b96900b90914b0cc1dba36f9736c038db2859d
Fixed by: https://github.com/ruby/ruby/commit/e9ddf2ba41a0bffe1047e33576affd48808c5d0b (2.2.10)