CVE-2023-26432
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductOpen-xchange Appsuite Backend
PublishedJun 20, 2023
First seenJun 20, 2023
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- open-xchange open-xchange_appsuite_backend7.10.6, 8.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| open-xchange open-xchange_appsuite_backend | v < 7.10.6, 8.0.0 ≤ v < 8.11.0, 7.10.6 | 7.10.6, 8.11.0 |
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