CVE-2017-14064

Public Exploit

Description

Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.35% Top 20%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.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://usn.ubuntu.com/3685-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:0585 third party advisory vendor advisory
https://www.debian.org/security/2017/dsa-3966 third party advisory vendor advisory
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:0378 third party advisory vendor advisory
https://hackerone.com/reports/209949 third party advisory exploit
http://www.securitytracker.com/id/1042004 third party advisory vdb entry
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/ vendor advisory
http://www.securitytracker.com/id/1039363 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2017:3485 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2018:0583 third party advisory vendor advisory
https://bugs.ruby-lang.org/issues/13853 patch vendor advisory issue tracking
https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85 patch third party advisory issue tracking
http://www.securityfocus.com/bid/100890 third party advisory vdb entry
https://security.gentoo.org/glsa/201710-18 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-14064?
CVE-2017-14064 has been scored as a critical severity vulnerability.
How to fix CVE-2017-14064?
To fix CVE-2017-14064, 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-2017-14064 being actively exploited in the wild?
It is possible that CVE-2017-14064 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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