CVE-2023-26430: Attackers with access to user accounts can inject arbitrary ..
open-xchange
•
Aug 2, 2023
•
Aug 8, 2023
Description
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.
Products affected:
open-xchange» open-xchange_appsuite_backend » 7.10.6
open-xchange» open-xchange_appsuite_backend » 8.10.0
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Severity
4.3
/
10
CVSS base metrics
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
User interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Exploitability Score
2.8
Impact Score
1.4
Weakness
CWE-77__CWE-77__
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