CVE-2016-2339
Published: 6 January 2017
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | 2.3.0 and later not affected |
Priority
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
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| xenial |
Does not exist
|
|
|
Patches: upstream: https://github.com/ruby/ruby/commit/bcc2421b4938fc1d9f5f3fb6ef2320571b27af42 |
||
|
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 |