Vulnerability Description
IPv4-mapped IPv6 addresses did not get recognized as "local" by the code and a connection attempt is made. Attackers with access to user accounts could use this to bypass existing deny-list functionality and trigger requests to restricted network infrastructure to gain insight about topology and running services. We now respect possible IPV4-mapped IPv6 addresses when checking if contained in a deny-list. No publicly available exploits are known.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Xchange | Open-Xchange Appsuite Backend | < 7.10.6 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-ConsumptiThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2023/Jun/8Mailing ListThird Party Advisory
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/ox
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release Notes
- http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-ConsumptiThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2023/Jun/8Mailing ListThird Party Advisory
- https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/ox
- https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release Notes
FAQ
What is CVE-2023-26431?
CVE-2023-26431 is a vulnerability with a CVSS score of 5.0 (MEDIUM). IPv4-mapped IPv6 addresses did not get recognized as "local" by the code and a connection attempt is made. Attackers with access to user accounts could use this to bypass existing deny-list functional...
How severe is CVE-2023-26431?
CVE-2023-26431 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-26431?
Check the references section above for vendor advisories and patch information. Affected products include: Open-Xchange Open-Xchange Appsuite Backend.