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CVE-2023-26432

Published: Jun 20, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-400
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
1.1%
Top 37.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400NVD-CWE-noinfo

Affected Products

OX App SuiteOX Software GmbH
On-prem
Communications / email-server-client
open-xchange appsuite backendopen-xchangeCommunications
ox software gmbhcommercialDECommunicationsaka ox app suite
open-xchangecommercialDECommunicationsaka open-xchange gmbh, ox

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf
software.open-xchange.com
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json
documentation.open-xchange.com
http://seclists.org/fulldisclosure/2023/Jun/8
seclists.org
and 1 more references View all →

Timeline

Published
Jun 20, 2023
Last Updated
Nov 21, 2024

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