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nvd[email protected]NVD:CVE-2023-26430
HistoryAug 02, 2023 - 1:15 p.m.

CVE-2023-26430

2023-08-0213:15:10
CWE-77
web.nvd.nist.gov
2
arbitrary control characters
sieve mail-filter
app suite restrictions
manual cleanup

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

AI Score

4.2

Confidence

High

EPSS

0.002

Percentile

54.4%

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.

Affected configurations

Nvd
Node
open-xchangeopen-xchange_appsuite_backendMatch7.10.6
OR
open-xchangeopen-xchange_appsuite_backendMatch8.10.0
VendorProductVersionCPE
open-xchangeopen-xchange_appsuite_backend7.10.6cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:*:*:*:*:*:*:*
open-xchangeopen-xchange_appsuite_backend8.10.0cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.10.0:*:*:*:*:*:*:*

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

AI Score

4.2

Confidence

High

EPSS

0.002

Percentile

54.4%

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