critical
CVE-2018-8780
ruby: Unintentional directory traversal by poisoned NULL byte in Dir
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Amazon (medium), Oracle (medium), Ubuntu (medium).
Description
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, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.10 | ruby | 2.5.1-r0 |
| alpine 3.11 | ruby | 2.5.1-r0 |
| alpine 3.12 | ruby | 2.5.1-r0 |
| alpine 3.13 | ruby | 2.5.1-r0 |
| alpine 3.14 | ruby | 2.5.1-r0 |
| alpine 3.15 | ruby | 2.5.1-r0 |
| alpine 3.16 | ruby | 2.5.1-r0 |
| alpine 3.17 | ruby | 2.5.1-r0 |
| alpine 3.18 | ruby | 2.5.1-r0 |
| alpine 3.19 | ruby | 2.5.1-r0 |
| alpine 3.20 | ruby | 2.5.1-r0 |
| alpine 3.21 | ruby | 2.5.1-r0 |
Show all 122 entries from 35 sources
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.10 | ruby | 2.5.1-r0 |
| alpine 3.11 | ruby | 2.5.1-r0 |
| alpine 3.12 | ruby | 2.5.1-r0 |
| alpine 3.13 | ruby | 2.5.1-r0 |
| alpine 3.14 | ruby | 2.5.1-r0 |
| alpine 3.15 | ruby | 2.5.1-r0 |
| alpine 3.16 | ruby | 2.5.1-r0 |
| alpine 3.17 | ruby | 2.5.1-r0 |
| alpine 3.18 | ruby | 2.5.1-r0 |
| alpine 3.19 | ruby | 2.5.1-r0 |
| alpine 3.20 | ruby | 2.5.1-r0 |
| alpine 3.21 | ruby | 2.5.1-r0 |
| alpine 3.22 | ruby | 2.5.1-r0 |
| alpine 3.23 | ruby | 2.5.1-r0 |
| alpine 3.24 | ruby | 2.5.1-r0 |
| alpine 3.4 | ruby | 2.3.7-r0 |
| alpine 3.5 | ruby | 2.3.7-r0 |
| alpine 3.6 | ruby | 2.4.4-r0 |
| alpine 3.7 | ruby | 2.4.4-r0 |
| alpine 3.8 | ruby | 2.5.1-r0 |
| alpine 3.9 | ruby | 2.5.1-r0 |
| alpine edge | ruby | 2.5.1-r0 |
| amazon linux 1 | ruby20 | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby20-debuginfo | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby20-devel | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby20-doc | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby20-irb | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby20-libs | 2.0.0.648-1.31.amzn1 |
| amazon linux 1 | ruby22 | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby22-debuginfo | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby22-devel | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby22-doc | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby22-irb | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby22-libs | 2.2.10-1.11.amzn1 |
| amazon linux 1 | ruby23 | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby23-debuginfo | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby23-devel | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby23-doc | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby23-irb | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby23-libs | 2.3.7-1.19.amzn1 |
| amazon linux 1 | ruby24 | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | ruby24-debuginfo | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | ruby24-devel | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | ruby24-doc | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | ruby24-irb | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | ruby24-libs | 2.4.4-1.30.6.amzn1 |
| amazon linux 1 | rubygem20-bigdecimal | 1.2.0-1.31.amzn1 |
| amazon linux 1 | rubygem20-io-console | 0.4.2-1.31.amzn1 |
| amazon linux 1 | rubygem20-psych | 2.0.0-1.31.amzn1 |
| amazon linux 1 | rubygem22-bigdecimal | 1.2.6-1.11.amzn1 |
| amazon linux 1 | rubygem22-io-console | 0.4.3-1.11.amzn1 |
| amazon linux 1 | rubygem22-psych | 2.0.8.1-1.11.amzn1 |
| amazon linux 1 | rubygem23-bigdecimal | 1.2.8-1.19.amzn1 |
| amazon linux 1 | rubygem23-did_you_mean | 1.0.0-1.19.amzn1 |
| amazon linux 1 | rubygem23-io-console | 0.4.5-1.19.amzn1 |
| amazon linux 1 | rubygem23-json | 1.8.3.1-1.19.amzn1 |
| amazon linux 1 | rubygem23-psych | 2.1.0.1-1.19.amzn1 |
| amazon linux 1 | rubygem24-bigdecimal | 1.3.2-1.30.6.amzn1 |
| amazon linux 1 | rubygem24-did_you_mean | 1.1.0-1.30.6.amzn1 |
| amazon linux 1 | rubygem24-io-console | 0.4.6-1.30.6.amzn1 |
| amazon linux 1 | rubygem24-json | 2.0.4-1.30.6.amzn1 |
| amazon linux 1 | rubygem24-psych | 2.2.2-1.30.6.amzn1 |
| amazon linux 1 | rubygem24-xmlrpc | 0.2.1-1.30.6.amzn1 |
| amazon linux 1 | rubygems20 | 2.0.14.1-1.31.amzn1 |
| amazon linux 1 | rubygems20-devel | 2.0.14.1-1.31.amzn1 |
| amazon linux 1 | rubygems22 | 2.4.5.2-1.11.amzn1 |
| amazon linux 1 | rubygems22-devel | 2.4.5.2-1.11.amzn1 |
| amazon linux 1 | rubygems23 | 2.5.2.3-1.19.amzn1 |
| amazon linux 1 | rubygems23-devel | 2.5.2.3-1.19.amzn1 |
| amazon linux 1 | rubygems24 | 2.6.14.1-1.30.6.amzn1 |
| amazon linux 1 | rubygems24-devel | 2.6.14.1-1.30.6.amzn1 |
| amazon linux 2 | ruby | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-debuginfo | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-devel | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-doc | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-irb | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-libs | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | ruby-tcltk | 2.0.0.648-36.amzn2.0.1 |
| amazon linux 2 | rubygem-bigdecimal | 1.2.0-36.amzn2.0.1 |
| amazon linux 2 | rubygem-io-console | 0.4.2-36.amzn2.0.1 |
| amazon linux 2 | rubygem-json | 1.7.7-36.amzn2.0.1 |
| amazon linux 2 | rubygem-minitest | 4.3.2-36.amzn2.0.1 |
| amazon linux 2 | rubygem-psych | 2.0.0-36.amzn2.0.1 |
| amazon linux 2 | rubygem-rake | 0.9.6-36.amzn2.0.1 |
| amazon linux 2 | rubygem-rdoc | 4.0.0-36.amzn2.0.1 |
| amazon linux 2 | rubygems | 2.0.14.1-36.amzn2.0.1 |
| amazon linux 2 | rubygems-devel | 2.0.14.1-36.amzn2.0.1 |
| debian 7 | ruby1.8 | 1.8.7.358-7.1+deb7u6 |
| debian 7 | ruby1.9.1 | 1.9.3.194-8.1+deb7u8 |
| debian 8 | ruby2.1 | 2.1.5-2+deb8u4 |
| debian 9 | ruby2.3 | 2.3.3-1+deb9u3 |
| Oracle Linux 7 | ruby | 2.0.0.648-36.el7 |
| Oracle Linux 7 | ruby-devel | 2.0.0.648-36.el7 |
| Oracle Linux 7 | ruby-doc | 2.0.0.648-36.el7 |
| Oracle Linux 7 | ruby-irb | 2.0.0.648-36.el7 |
| Oracle Linux 7 | ruby-libs | 2.0.0.648-36.el7 |
| Oracle Linux 7 | ruby-tcltk | 2.0.0.648-36.el7 |
| Oracle Linux 7 | rubygem-bigdecimal | 1.2.0-36.el7 |
| Oracle Linux 7 | rubygem-io-console | 0.4.2-36.el7 |
| Oracle Linux 7 | rubygem-json | 1.7.7-36.el7 |
| Oracle Linux 7 | rubygem-minitest | 4.3.2-36.el7 |
| Oracle Linux 7 | rubygem-psych | 2.0.0-36.el7 |
| Oracle Linux 7 | rubygem-rake | 0.9.6-36.el7 |
| Oracle Linux 7 | rubygem-rdoc | 4.0.0-36.el7 |
| Oracle Linux 7 | rubygems | 2.0.14.1-36.el7 |
| Oracle Linux 7 | rubygems-devel | 2.0.14.1-36.el7 |
| Red Hat | ruby | no fix listed |
| Red Hat | ruby-devel | no fix listed |
| Red Hat | ruby-docs | no fix listed |
| Red Hat | ruby-irb | no fix listed |
| Red Hat | ruby-libs | no fix listed |
| Red Hat | ruby-rdoc | no fix listed |
| Red Hat | ruby-ri | no fix listed |
| Red Hat | ruby-static | no fix listed |
| Red Hat | ruby-tcltk | no fix listed |
| ubuntu 14.04 | ruby1.9.1 | 1.9.3.484-2ubuntu1.11 |
| ubuntu 14.04 | ruby2.0 | 2.0.0.484-1ubuntu2.9 |
| ubuntu 16.04 | ruby2.3 | 2.3.1-2~16.04.9 |
| ubuntu 16.04-ESM | ruby2.3 | 2.3.1-2~16.04.9 |
| ubuntu 17.10 | ruby2.3 | 2.3.3-1ubuntu1.5 |
| ubuntu 18.04 | ruby2.5 | 2.5.1-1 |
| ubuntu 18.04-ESM | ruby2.5 | 2.5.1-1 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://www.securityfocus.com/bid/103739
- http://www.securitytracker.com/id/1042004
- https://access.redhat.com/errata/RHSA-2018:3729
- https://access.redhat.com/errata/RHSA-2018:3730
- https://access.redhat.com/errata/RHSA-2018:3731
- https://access.redhat.com/errata/RHSA-2019:2028
- https://access.redhat.com/errata/RHSA-2020:0542
All 28 references
- https://access.redhat.com/errata/RHSA-2020:0591
- https://access.redhat.com/errata/RHSA-2020:0663
- https://access.redhat.com/security/cve/CVE-2018-8780
- https://github.com/ruby/ruby/commit/143eb22f1877815dd802f7928959c5f93d4c7bb3
- https://github.com/ruby/ruby/commit/bd5661a3cbb38a8c3a3ea10cd76c88bbef7871b8
- https://linux.oracle.com/cve/CVE-2018-8780.html
- https://linux.oracle.com/errata/ELSA-2019-2028.html
- https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
- https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-8780
- https://ubuntu.com/security/notices/USN-3626-1
- https://usn.ubuntu.com/3626-1/
- https://www.cve.org/CVERecord?id=CVE-2018-8780
- https://www.debian.org/security/2018/dsa-4259
- https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-dir-cve-2018-8780/
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/