CVE-2023-26438

Severity Score

3.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.

Las búsquedas de servicios externos para una serie de protocolos eran vulnerables a una debilidad de condición de carrera de tiempo de comprobación/tiempo de uso (TOCTOU), que afectaba a JDK DNS Cache. Los atacantes que sincronizaban correctamente la expiración de la caché DNS podían inyectar una configuración que eludía las listas de denegación de red existentes. Los atacantes podían explotar esta debilidad para descubrir la existencia de una infraestructura de red restringida y la disponibilidad del servicio. Se introdujeron mejoras para incluir de denegación no sólo durante la comprobación de los datos de conexión proporcionados, sino también durante el uso. No se conocen exploits disponibles públicamente.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-02-22 CVE Reserved
2023-08-02 CVE Published
2024-08-02 CVE Updated
2024-08-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-918: Server-Side Request Forgery (SSRF)

CAPEC

References (4)

URL	Tag	Source
http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html	Third Party Advisory
http://seclists.org/fulldisclosure/2023/Aug/8	Mailing List
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf	Release Notes

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json	2024-01-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Open-xchange Search vendor "Open-xchange"		Open-xchange Appsuite Backend Search vendor "Open-xchange" for product "Open-xchange Appsuite Backend"				7.10.6 Search vendor "Open-xchange" for product "Open-xchange Appsuite Backend" and version "7.10.6"		-		Affected
Open-xchange Search vendor "Open-xchange"		Open-xchange Appsuite Backend Search vendor "Open-xchange" for product "Open-xchange Appsuite Backend"				8.10.0 Search vendor "Open-xchange" for product "Open-xchange Appsuite Backend" and version "8.10.0"		-		Affected