In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4,...
Vulnerability 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, 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/
- https://access.redhat.com/errata/RHSA-2018:3729
- https://usn.ubuntu.com/3626-1/
- http://www.securitytracker.com/id/1042004
- https://access.redhat.com/errata/RHSA-2018:3730
- https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
- https://access.redhat.com/errata/RHSA-2018:3731
- 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/buffer-under-read-unpack-cve-2018-8778/
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/
- https://www.debian.org/security/2018/dsa-4259
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/
- https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html
- http://www.securityfocus.com/bid/103693
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://access.redhat.com/errata/RHSA-2019:2028
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Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.