CVE-2023-26438

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html	Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2023/Aug/8	Mailing List Third Party Advisory
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf	Release Notes
http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html	Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2023/Aug/8	Mailing List Third Party Advisory
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf	Release Notes

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:::::::*
	cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.10.0:::::::*

History

No history.

Information

Published : 2023-08-02 13:15

Updated : 2024-11-21 07:51

NVD link : CVE-2023-26438

Mitre link : CVE-2023-26438

CVE.ORG link : CVE-2023-26438

JSON object : View

Products Affected

open-xchange

open-xchange_appsuite_backend

CWE

CWE-918

Server-Side Request Forgery (SSRF)

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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