CVE-2018-8778

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CVE-2018-8778

Summary:

Details: 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.

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/