CVE-2023-26432

When adding an external mail account, processing of SMTP "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue SMTP service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted SMTP server response to reasonable length/size. No publicly available exploits are known.

Score

CVSS 3.1 4.3 Medium

Status

Modified - security@open-xchange.com

Published

2023-06-20

Last modified

2024-12-03

Weaknesses

CWE-400

Affected products

• Open-xchange Appsuite Backend (Open-xchange)
• Ox App Suite (Ox Software Gmbh)

References

• http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.html
• http://seclists.org/fulldisclosure/2023/Jun/8
• https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json
• https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf