VulnerabilityModified
CVE-2016-2338
An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby.
CRITICAL 9.8EPSS 4.68%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.68%). 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 Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.68% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- ruby-lang/ruby · debian/debian linux
- Source
- cret@cert.org
References
- http://www.talosintelligence.com/reports/TALOS-2016-0032/Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00032.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221228-0005/Third Party Advisory
- http://www.talosintelligence.com/reports/TALOS-2016-0032/Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00032.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221228-0005/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.