Vulnerability Details CVE-2023-26433
When adding an external mail account, processing of IMAP "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue IMAP service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted IMAP server response to reasonable length/size. No publicly available exploits are known.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.3%
CVSS Severity
CVSS v3 Score 4.3
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
- 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
Products affected by CVE-2023-26433
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.6.2
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.6.3
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.8.0
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.8.2
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.8.3
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.0.0
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.10.0
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cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.9.0