CVE-2016-2339 — CRITICAL (9.8)

Vulnerability Description

An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby. In Fiddle::Function.new "initialize" heap buffer "arg_types" allocation is made based on args array length. Specially constructed object passed as element of args array can increase this array size after mentioned allocation and cause heap overflow.

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ruby-Lang	Ruby	2.2.2

Related Weaknesses (CWE)

CWE-119

References

http://www.securityfocus.com/bid/91234
http://www.talosintelligence.com/reports/TALOS-2016-0034/ExploitTechnical DescriptionThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
http://www.securityfocus.com/bid/91234
http://www.talosintelligence.com/reports/TALOS-2016-0034/ExploitTechnical DescriptionThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

FAQ

What is CVE-2016-2339?

CVE-2016-2339 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby. In Fiddle::Function.new "initialize" heap buffer "arg_types" allocation is ma...

How severe is CVE-2016-2339?

CVE-2016-2339 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2016-2339?

Check the references section above for vendor advisories and patch information. Affected products include: Ruby-Lang Ruby.