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CVE-2016-2337

Published: 6 January 2017

Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution.

Notes

AuthorNote
mdeslaur
2.3.0 and later not affected

Priority

Negligible

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
ruby1.8
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist

ruby1.9.1
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty
Released (1.9.3.484-2ubuntu1.3)
upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Patches:
upstream: https://github.com/ruby/ruby/commit/a2b8925a94a672235ca6a16e584bf09026a957ab
ruby2.0
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (2.0.0.484-1ubuntu2.4)
upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist

ruby2.3
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(2.3.1-2~16.04)
yakkety Not vulnerable
(2.3.1-5build2)
zesty Not vulnerable
(2.3.3-1)

Severity score breakdown

Parameter Value
Base score 9.8
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