High severity · published Nov 2, 2023
CVE-2023-26455
RMI was not requiring authentication when calling ChronosRMIService:setEventOrganizer
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
RMI was not requiring authentication when calling ChronosRMIService:setEventOrganizer. Attackers with local or adjacent network access could abuse the RMI service to modify calendar items using RMI. RMI access is restricted to localhost by default. The interface has been updated to require authenticated requests. No publicly available exploits are known.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OA
OX App Suite · OX Software GmbH
through 7.10.6-rev48; through 8.12 · source: vendor
OA
Open-xchange Appsuite · Open-xchange
before 7.10.6; 7.10.6; 7.10.6; 7.10.6; 7.10.6; 7.10.6; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-26455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-26455
documentation.open-xchange.com
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0004.json
Release Notes
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6243_7.10.6_2023-08-01.pdf
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