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CVE-2016-2338

CRITICAL
9.8
CVSS Score
Published: February 14, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 12:43 AM UTC
2 products affected across 2 vendorsDebian LinuxRuby

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Severity
CRITICAL9.8
Exploit prediction
EPSS 5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

ExploitThird Party Advisory
Source: [email protected]
http://www.talosintelligence.com/reports/TALOS-2016-0032/
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20221228-0005/

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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