CVE-2017-0898

Publication date 15 September 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Ruby before 2.4.2, 2.3.5, and 2.2.8 is vulnerable to a malicious format string which contains a precious specifier (*) with a huge minus value. Such situation can lead to a buffer overrun, resulting in a heap memory corruption or an information disclosure from the heap.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ruby2.3	18.04 LTS bionic	Not in release
	17.10 artful	Fixed 2.3.3-1ubuntu1.6
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Fixed 2.3.1-2~16.04.10
	14.04 LTS trusty	Not in release
ruby1.9.1	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	17.04 zesty	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Fixed 1.9.3.484-2ubuntu1.5
ruby2.0	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	17.04 zesty	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Fixed 2.0.0.484-1ubuntu2.10

Notes

mdeslaur

backported patch in debian (2.3.3-1+deb9u2) package

Patch details

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

Package	Patch details
ruby2.3	Other: f0abd42

Severity score breakdown

Parameter	Value
Base score	9.1 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H