CVE-2016-2338

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se presenta una vulnerabilidad de desbordamiento de pila explotable en la función Psych::Emitter start_document de Ruby. En la función Psych::Emitter start_document la asignación de "head" del buffer de heap es realizada en base a la longitud del array de etiquetas. Un objeto especialmente construido que es pasado como elemento de la matriz de etiquetas puede aumentar el tamaño de esta matriz después de la asignación mencionada y causar un desbordamiento de la pila

*Credits: N/A

CVSS Scores

NISTv3.1 9.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-02-12 CVE Reserved
2020-02-14 CVE Published
2022-12-19 First Exploit
2023-06-19 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html	Mailing List
https://security.netapp.com/advisory/ntap-20221228-0005	Third Party Advisory

URL	Date	SRC
https://github.com/SpiralBL0CK/CVE-2016-2338-nday	2022-12-19
http://www.talosintelligence.com/reports/TALOS-2016-0032	2024-08-05

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.2.2 Search vendor "Ruby-lang" for product "Ruby" and version "2.2.2"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.3.0 Search vendor "Ruby-lang" for product "Ruby" and version "2.3.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected