CVE-2016-2339: Buffer Overflow
First published: Fri Jan 06 2017(Updated: )
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.
Credit: cret@cert.org cret@cert.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ruby-lang Ruby | =2.2.2 | |
| Ruby-lang Ruby | =2.3.0 | |
| debian/ruby2.1 |
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Reference Links
- http://www.securityfocus.com/bid/91234
- http://www.talosintelligence.com/reports/TALOS-2016-0034/
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://launchpad.net/bugs/cve/CVE-2016-2339
- https://github.com/ruby/ruby/commit/bcc2421b4938fc1d9f5f3fb6ef2320571b27af42
- https://github.com/ruby/ruby/commit/de577357e80fa15f5cf13a81aa3decc783ea929e
- https://github.com/ruby/ruby/commit/4977af3c3d54d27167bfc237f1b2802c40bddc10
- https://security-tracker.debian.org/tracker/CVE-2016-2339
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2339
- https://nvd.nist.gov/vuln/detail/CVE-2016-2339
- https://ubuntu.com/security/CVE-2016-2339
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