CVE-2018-8778

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.

References

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-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-2-3-7-released/

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/buffer-under-read-unpack-cve-2018-8778/

https://www.debian.org/security/2018/dsa-4259

https://usn.ubuntu.com/3626-1/

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html

https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html

https://access.redhat.com/errata/RHSA-2019:2028

https://access.redhat.com/errata/RHSA-2018:3731

https://access.redhat.com/errata/RHSA-2018:3730

https://access.redhat.com/errata/RHSA-2018:3729

http://www.securitytracker.com/id/1042004

http://www.securityfocus.com/bid/103693

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3