| Name | CVE-2016-2339 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1421-1 |
| Debian Bugs | 851161 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ruby2.1 (PTS) | jessie, jessie (lts) | 2.1.5-2+deb8u14 | fixed |
| ruby2.3 (PTS) | stretch (security) | 2.3.3-1+deb9u11 | fixed |
| stretch (lts), stretch | 2.3.3-1+deb9u12 | fixed |
The information below is based on the following data on fixed versions.
Notes
http://www.talosintelligence.com/reports/TALOS-2016-0034/
Fixed by: https://github.com/ruby/ruby/commit/bcc2421b4938fc1d9f5f3fb6ef2320571b27af42
Fixed by: https://github.com/ruby/ruby/commit/de577357e80fa15f5cf13a81aa3decc783ea929e
Fixed by: https://github.com/ruby/ruby/commit/4977af3c3d54d27167bfc237f1b2802c40bddc10