CVE-2016-2339
An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.19% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- ruby-lang/ruby
- Source
- cret@cert.org
References
- http://www.securityfocus.com/bid/91234
- http://www.talosintelligence.com/reports/TALOS-2016-0034/Exploit, Technical Description, Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- http://www.securityfocus.com/bid/91234
- http://www.talosintelligence.com/reports/TALOS-2016-0034/Exploit, Technical Description, Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.