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Dear subscribers,

We're sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those 
vulnerabilities. Feel free to join our bug bounty programs for OX App Suite, Dovecot and PowerDNS at YesWeHack.

This advisory has also been published at 
https://documentation.open-xchange.com/appsuite/security/advisories/html/2024/oxas-adv-2024-0001.html.

Yours sincerely,
Martin Heiland, Open-Xchange GmbH



Internal reference: OXUIB-2660
Type: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
Component: frontend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite frontend 7.10.6-rev40, OX App Suite frontend 8.20
First fixed revision: OX App Suite frontend 7.10.6-rev41, OX App Suite frontend 8.21
Discovery date: 2023-12-13
Solution date: 2024-02-05
Disclosure date: 2024-02-08
CVE: CVE-2024-23192
CVSS: 6.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS for RSS content using data-attributes. RSS feeds that contain malicious data- attributes could be abused to inject 
script code to a users browser session when reading compromised RSS feeds or successfully luring users to compromised 
accounts.

Risk:
Attackers could perform malicious API requests or extract information from the users account. No publicly available 
exploits are known.

Solution:
Please deploy the provided updates and patch releases. Potentially malicious attributes now get removed from external 
RSS content.



---



Internal reference: OXUIB-2663
Type: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
Component: frontend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite frontend 7.10.6-rev40
First fixed revision: OX App Suite frontend 7.10.6-rev41
Discovery date: 2023-12-13
Solution date: 2024-02-02
Disclosure date: 2024-02-08
CVE: CVE-2024-23191
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS using data- attributes at upsell ads. Upsell advertisement information of an account can be manipulated to execute 
script code in the context of the users browser session. To exploit this an attacker would require temporary access to 
a users account or an successful social engineering attack to lure users to maliciously configured accounts.

Risk:
Attackers could perform malicious API requests or extract information from the users account. No publicly available 
exploits are known.

Solution:
Please deploy the provided updates and patch releases. Sanitization of user-defined upsell content has been improved.



---



Internal reference: OXUIB-2688
Type: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
Component: frontend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite frontend 7.10.6-rev40
First fixed revision: OX App Suite frontend 7.10.6-rev41
Discovery date: 2024-01-09
Solution date: 2024-02-02
Disclosure date: 2024-02-08
CVE: CVE-2024-23190
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS using "data" attributes at upsell shop. Upsell shop information of an account can be manipulated to execute script 
code in the context of the users browser session. To exploit this an attacker would require temporary access to a users 
account or an successful social engineering attack to lure users to maliciously configured accounts.

Risk:
Attackers could perform malicious API requests or extract information from the users account. No publicly available 
exploits are known.

Solution:
Please deploy the provided updates and patch releases. Sanitization of user-defined upsell content has been improved.



---



Internal reference: OXUIB-2689
Type: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
Component: frontend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite frontend 7.10.6-rev40, OX App Suite frontend 8.21
First fixed revision: OX App Suite frontend 7.10.6-rev41, OX App Suite frontend 8.22
Discovery date: 2024-01-09
Solution date: 2024-02-01
Disclosure date: 2024-02-08
CVE: CVE-2024-23189
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)

Details:
XSS using tasks "original mail" references. Embedded content references at tasks could be used to temporarily execute 
script code in the context of the users browser session. To exploit this an attacker would require temporary access to 
the users account, access to another account within the same context or an successful social engineering attack to make 
users import external content.

Risk:
Attackers could perform malicious API requests or extract information from the users account. No publicly available 
exploits are known.

Solution:
Please deploy the provided updates and patch releases. Sanitization of user-generated content has been improved.



---



Internal reference: DOCS-5222
Type: CWE-502 (Deserialization of Untrusted Data)
Component: office
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite office 7.10.6-rev11
First fixed revision: OX App Suite office 7.10.6-rev12
Discovery date: 2024-01-24
Solution date: 2024-02-06
Disclosure date: 2024-02-08
CVE: CVE-2023-46604
CVSS: 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H)

Details:
CVE-2023-46604 regarding office/dcs. CVE-2023-46604 has been identified at the Apache ActiveMQ (AMQ) project which 
affects a version of that component shipped by OX App Suite components.

Risk:
The vulnerability in AMQ can potentially be exploited in OX App Suite deployments, depending on network topology and 
configuration. No publicly available exploits are known.

Solution:
Please deploy the provided updates and patch releases. We provide an updated version of the affected component that is 
not vulnerable.

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• OXAS-ADV-2024-0001: OX App Suite Security Advisory Martin Heiland via Fulldisclosure (Apr 10)