Attackers with access to user accounts can inject arbitrary control characters to SIEVE mail-filter rules. This could be abused to access SIEVE extension that are not allowed by App Suite or to inject rules which would break per-user filter processing, requiring manual cleanup of such rules. We have added sanitization to all mail-filter APIs to avoid forwardning control characters to subsystems. No publicly available exploits are known.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
open-xchange open-xchange appsuite backend 7.10.6 |
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open-xchange open-xchange appsuite backend 8.10.0 |
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