CVE-2016-2339

Publication date 6 January 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ruby1.8	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life
ruby1.9.1	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Fixed 1.9.3.484-2ubuntu1.3
	12.04 LTS precise	Ignored end of life
ruby2.0	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Fixed 2.0.0.484-1ubuntu2.4
	12.04 LTS precise	Not in release
ruby2.3	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Notes

mdeslaur

2.3.0 and later not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
ruby1.9.1	Upstream: bcc2421

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3365-1
Ruby vulnerabilities
25 July 2017