Message-ID: <928301353.2587.1690978889760@appsuite-guard.open-xchange.com>
Date: Wed, 2 Aug 2023 14:21:29 +0200 (CEST)
From: Martin Heiland via Fulldisclosure <fulldisclosure@...lists.org>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: [FD] OXAS-ADV-2023-0003: OX App Suite Security Advisory

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 AppSuite, Dovecot and PowerDNS at YesWeHack.

This advisory has also been published at https://documentation.open-xchange.com/security/advisories/.

Yours sincerely,
    Martin Heiland, Open-Xchange GmbH



Internal reference: OXUIB-2282
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-rev27
First fixed revision: OX App Suite frontend 7.10.6-rev28
Discovery date: 2023-03-20
Solution date: 2023-04-20
Disclosure date: 2023-08-02
CVE: CVE-2023-26445
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:L)

Details:
Themes can be abused to inject script code for persistent XSS. Frontend themes are defined by user-controllable jslob settings and could point to a malicious resource which gets processed during login.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We now sanitize the theme value and use a default fallback if no theme matches.



---



Internal reference: OXUIB-2283
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-rev27, OX App Suite frontend 8.11
First fixed revision: OX App Suite frontend 7.10.6-rev28, OX App Suite frontend 8.12
Discovery date: 2023-03-20
Solution date: 2023-04-20
Disclosure date: 2023-08-02
CVE: CVE-2023-26446
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 application passwords "lastDevice" property. The users clientID at "application passwords" was not sanitized or escaped before being added to DOM.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We now sanitize the user-controllable clientID parameter.



---



Internal reference: OXUIB-2284
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-rev27
First fixed revision: OX App Suite frontend 7.10.6-rev28
Discovery date: 2023-03-20
Solution date: 2023-04-20
Disclosure date: 2023-08-02
CVE: CVE-2023-26447
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS in upsell portal widget. The "upsell" widget for the portal allows to specify a product description. This description taken from a user-controllable jslob did not get escaped before being added to DOM.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We now sanitize jslob content.



---



Internal reference: OXUIB-2285
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-rev27
First fixed revision: OX App Suite frontend 7.10.6-rev28
Discovery date: 2023-03-20
Solution date: 2023-04-27
Disclosure date: 2023-08-02
CVE: CVE-2023-26448
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS via user-defined login/logout URL. Custom log-in and log-out locations are used-defined as jslob but were not checked to contain malicious protocol handlers.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We now sanitize jslob content for those locations to avoid redirects to malicious content.



---



Internal reference: OXUIB-2286
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-rev27
First fixed revision: OX App Suite frontend 7.10.6-rev28
Discovery date: 2023-03-20
Solution date: 2023-04-19
Disclosure date: 2023-08-02
CVE: CVE-2023-26449
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Details:
XSS by returning user-defined content-type as Chat service resource. The "OX Chat" web service did not specify a media-type when processing responses by external resources.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We are now defining the accepted media-type to avoid code execution.



---



Internal reference: OXUIB-2287
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-rev27
First fixed revision: OX App Suite frontend 7.10.6-rev28
Discovery date: 2023-03-20
Solution date: 2023-04-19
Disclosure date: 2023-08-02
CVE: CVE-2023-26450
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 malicious Count service resource. The "OX Count" web service did not specify a media-type when processing responses by external resources.

Risk:
Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. No publicly available exploits are known.

Solution:
We are now defining the accepted media-type to avoid code execution.



---



Internal reference: MWB-1877
Type: CWE-918 (Server-Side Request Forgery (SSRF))
Component: backend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite backend 7.10.6-rev42, OX App Suite backend 8.10
First fixed revision: OX App Suite backend 7.10.6-rev43, OX App Suite backend 8.11
Discovery date: 2022-10-17
Solution date: 2023-04-27
Disclosure date: 2023-08-02
CVE: CVE-2023-26438
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Details:
SSRF using DNS rebinding attacks. External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists.

Risk:
Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. No publicly available exploits are known.

Solution:
Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use.



---



Internal reference: MWB-2020
Type: CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection'))
Component: backend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite backend 7.10.6-rev42, OX App Suite backend 8.10
First fixed revision: OX App Suite backend 7.10.6-rev43, OX App Suite backend 8.11
Discovery date: 2023-01-23
Solution date: 2023-04-26
Disclosure date: 2023-08-02
Researcher credits: Tim 'foobar7' Coen
CVE: CVE-2023-26430
CVSS: 3.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N)

Details:
Mailfilter (SIEVE) rules accept control characters. Attackers with access to user accounts can inject arbitrary control characters to SIEVE mail-filter rules.

Risk:
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. No publicly available exploits are known.

Solution:
We have added sanitization to all mail-filter APIs to avoid forwardning control characters to subsystems.



---



Internal reference: MWB-2086
Type: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))
Component: backend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite backend 7.10.6-rev42, OX App Suite backend 8.11
First fixed revision: OX App Suite backend 7.10.6-rev43, OX App Suite backend 8.12
Discovery date: 2023-03-14
Solution date: 2023-04-27
Disclosure date: 2023-08-02
Researcher credits: Mehmet 'mdisec' Ince
CVE: CVE-2023-26443
CVSS: 5.5 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L)

Details:
Potentially malicious SQL injection when using full-text autocomplete. Full-text autocomplete search allows user-provided SQL syntax to be injected to SQL statements.

Risk:
With existing sanitization in place, this can be abused to trigger benign SQL Exceptions but could potentially be escalated to a malicious SQL injection vulnerability. No publicly available exploits are known.

Solution:
We now properly encode single quotes for SQL FULLTEXT queries.



---



Internal reference: MWB-2102
Type: CWE-330 (Use of Insufficiently Random Values)
Component: backend
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite backend 8.11
First fixed revision: OX App Suite backend 8.12
Discovery date: 2023-03-27
Solution date: 2023-04-28
Disclosure date: 2023-08-02
Researcher credits:  Eldar 'HakuPiku' Zeynalli
CVE: CVE-2023-26451
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Details:
oAuth provider uses predictable secret source, allows to take over any oAuth session. Functions with insufficient randomness were used to generate authorization tokens of the integrated oAuth Authorization Service.

Risk:
Authorization codes were predictable for third parties and could be used to intercept and take over the client authorization process. As a result, other users accounts could be compromised. The oAuth Authorization Service is not enabled by default. No publicly available exploits are known.

Solution:
We have updated the implementation to use sources with sufficient randomness to generate authorization tokens.



---



Internal reference: DOCS-4726
Type: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))
Component: office
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite office 8.10
First fixed revision: OX App Suite office 8.11
Discovery date: 2023-02-13
Solution date: 2023-03-14
Disclosure date: 2023-08-02
Researcher credits: Mehmet 'mdisec' Ince
CVE: CVE-2023-26439
CVSS: 9.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Details:
SQL Injection at Cacheservice "getObjects" API. The cacheservice API could be abused to inject parameters with SQL syntax which was insufficiently sanitized before getting executed as SQL statement.

Risk:
Attackers with access to a local or restricted network were able to perform arbitrary SQL queries, discovering other users cached data. No publicly available exploits are known.

Solution:
We have improved the input check for API calls and filter for potentially malicious content.



---



Internal reference: DOCS-4727
Type: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))
Component: office
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite office 8.10
First fixed revision: OX App Suite office 8.11
Discovery date: 2023-02-13
Disclosure date: 2023-08-02
Researcher credits: Mehmet 'mdisec' Ince
CVE: CVE-2023-26440
CVSS: 8.3 (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)

Details:
SQL Injection at Cacheservice "registerGroup" API. The cacheservice API could be abused to indirectly inject parameters with SQL syntax which was insufficiently sanitized and would later be executed when creating new cache groups.

Risk:
Attackers with access to a local or restricted network could perform arbitrary SQL queries. No publicly available exploits are known.

Solution:
We have improved the input check for API calls and filter for potentially malicious content.



---



Internal reference: DOCS-4728
Type: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)
Component: office
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite office 8.10
First fixed revision: OX App Suite office 8.11
Discovery date: 2023-02-14
Solution date: 2023-04-28
Disclosure date: 2023-08-02
Researcher credits: Mehmet 'mdisec' Ince
CVE: CVE-2023-26441
CVSS: 6.9 (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L)

Details:
Cacheservices allows local file inclusion/removal through directory traversal. Cacheservice did not correctly check if relative cache object were pointing to the defined absolute location when accessing resources.

Risk:
An attacker with access to the database and a local or restricted network would be able to read arbitrary local file system resources that are accessible by the services system user account. No publicly available exploits are known.

Solution:
We have improved path validation and make sure that any access is contained to the defined root directory.



---



Internal reference: DOCS-4734
Type: CWE-918 (Server-Side Request Forgery (SSRF))
Component: office
Report confidence: Confirmed
Solution status: Fixed by vendor
Last affected revision: OX App Suite office 8.10
First fixed revision: OX App Suite office 8.11
Discovery date: 2023-02-15
Disclosure date: 2023-08-02
Researcher credits: Mehmet 'mdisec' Ince
CVE: CVE-2023-26442
CVSS: 3.2 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N)

Details:
Cacheservice HTTP client follow redirect responses, allowing SSRF. In case Cacheservice was configured to use a sproxyd object-storage backend, it would follow HTTP redirects issued by that backend.

Risk:
An attacker with access to a local or restricted network with the capability to intercept and replay HTTP requests to sproxyd (or who is in control of the sproxyd service) could perform a server-side request-forgery attack and make Cacheservice connect to unexpected resources. No publicly available exploits are known.

Solution:
We have disabled the ability to follow HTTP redirects when connecting to sproxyd resources.

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