CVE-2018-8779

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 UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.44% Top 25%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory ruby-lang.org Vendor Advisory ruby-lang.org Vendor Advisory ruby-lang.org Vendor Advisory ruby-lang.org Vendor Advisory ruby-lang.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/ patch vendor advisory
https://access.redhat.com/errata/RHSA-2018:3729 third party advisory vendor advisory
https://usn.ubuntu.com/3626-1/ third party advisory vendor advisory
http://www.securitytracker.com/id/1042004 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2018:3730 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2018:3731 third party advisory vendor advisory
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/ patch vendor advisory
http://www.securityfocus.com/bid/103767 third party advisory vdb entry
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html third party advisory mailing list
https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-unixsocket-cve-2018-8779/ vendor advisory
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/ patch vendor advisory
https://www.debian.org/security/2018/dsa-4259 third party advisory vendor advisory
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/ patch vendor advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html vendor advisory
https://access.redhat.com/errata/RHSA-2019:2028 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-8779?
CVE-2018-8779 has been scored as a high severity vulnerability.
How to fix CVE-2018-8779?
To fix CVE-2018-8779, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-8779 being actively exploited in the wild?
It is possible that CVE-2018-8779 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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