Vulnerability Details CVE-2018-8778
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, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 68.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://www.securityfocus.com/bid/103693
- 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://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://usn.ubuntu.com/3626-1/
- https://www.debian.org/security/2018/dsa-4259
- https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/
- 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/
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://www.securityfocus.com/bid/103693
- 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://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://usn.ubuntu.com/3626-1/
- https://www.debian.org/security/2018/dsa-4259
- https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/
- 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/
Products affected by CVE-2018-8778
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cpe:2.3:a:ruby-lang:ruby:2.2.0
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cpe:2.3:a:ruby-lang:ruby:2.2.1
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cpe:2.3:a:ruby-lang:ruby:2.2.2
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cpe:2.3:a:ruby-lang:ruby:2.2.3
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cpe:2.3:a:ruby-lang:ruby:2.2.4
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cpe:2.3:a:ruby-lang:ruby:2.2.5
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cpe:2.3:a:ruby-lang:ruby:2.2.6
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cpe:2.3:a:ruby-lang:ruby:2.2.7
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cpe:2.3:a:ruby-lang:ruby:2.2.8
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cpe:2.3:a:ruby-lang:ruby:2.2.9
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cpe:2.3:a:ruby-lang:ruby:2.3.0
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cpe:2.3:a:ruby-lang:ruby:2.3.1
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cpe:2.3:a:ruby-lang:ruby:2.3.2
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cpe:2.3:a:ruby-lang:ruby:2.3.3
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cpe:2.3:a:ruby-lang:ruby:2.3.4
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cpe:2.3:a:ruby-lang:ruby:2.3.5
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cpe:2.3:a:ruby-lang:ruby:2.3.6
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cpe:2.3:a:ruby-lang:ruby:2.4.0
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cpe:2.3:a:ruby-lang:ruby:2.4.1
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cpe:2.3:a:ruby-lang:ruby:2.4.2
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cpe:2.3:a:ruby-lang:ruby:2.4.3
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cpe:2.3:a:ruby-lang:ruby:2.5.0
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cpe:2.3:a:ruby-lang:ruby:2.6.0
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:17.10
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cpe:2.3:o:debian:debian_linux:7.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:redhat:enterprise_linux:6.0
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:7.4
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cpe:2.3:o:redhat:enterprise_linux:7.5
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cpe:2.3:o:redhat:enterprise_linux:7.6