Internal reference: MWB-1994 Type: CWE-922 (Insecure Storage of Sensitive Information) Component: backend Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite backend 7.10.6-rev39 First fixed revision: OX App Suite backend 7.10.6-rev40 Discovery date: 2023-01-09 Solution date: 2023-03-10 Disclosure date: 2023-06-20 Researcher credits: Tim 'foobar7' Coen CVE: CVE-2023-26427 CVSS: 3.2 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N) Details: Weak default permissions for noreply.properties. Default permissions for a properties file were too permissive. Risk: Local system users could read potentially sensitive information. No publicly available exploits are known. Solution: We updated the default permissions for noreply.properties set during package installation. --- Internal reference: MWB-2008 Type: CWE-639 (Authorization Bypass Through User-Controlled Key) Component: backend Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite backend 7.10.6-rev39, OX App Suite backend 8.9 First fixed revision: OX App Suite backend 7.10.6-rev40, OX App Suite backend 8.10 Discovery date: 2023-01-17 Solution date: 2023-03-10 Disclosure date: 2023-06-20 Researcher credits: Tim 'foobar7' Coen CVE: CVE-2023-26428 CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) Details: Access to other users signatures is not checked. Attackers can successfully request arbitrary snippet IDs, including E-Mail signatures of other users within the same context. Risk: Signatures of other users could be read even though they are not explicitly shared. No publicly available exploits are known. Solution: We improved permission handling when requesting snippets that are not explicitly shared with other users. --- Internal reference: MWB-2019 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-rev39, OX App Suite backend 8.10 First fixed revision: OX App Suite backend 7.10.6-rev40, OX App Suite backend 8.11 Discovery date: 2023-01-23 Solution date: 2023-03-09 Disclosure date: 2023-06-20 Researcher credits: Tim 'foobar7' Coen CVE: CVE-2023-26429 CVSS: 3.5 (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N) Details: User-feedback not sanitized for control characters. Control characters were not removed when exporting user feedback content. Risk: This allowed attackers to include unexpected content via user feedback and potentially break the exported data structure. No publicly available exploits are known. Solution: We now drop all control characters that are not whitespace character during the export. --- Internal reference: MWB-2038 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-rev39, OX App Suite backend 8.10 First fixed revision: OX App Suite backend 7.10.6-rev40, OX App Suite backend 8.11 Discovery date: 2023-02-07 Solution date: 2023-03-16 Disclosure date: 2023-06-20 Researcher credits: Mehmet 'mdisec' Ince CVE: CVE-2023-26431 CVSS: 5.0 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N) Details: SSRF through bypassing denylists via IPV4-mapped IPv6 addresses. IPv4-mapped IPv6 addresses did not get recognized as "local" by the code and a connection attempt is made. Risk: Attackers with access to user accounts could use this to bypass existing deny-list functionality and trigger requests to restricted network infrastructure to gain insight about topology and running services. No publicly available exploits are known. Solution: We now respect possible IPV4-mapped IPv6 addresses when checking if contained in a deny-list. --- Internal reference: MWB-2046 Type: CWE-400 (Uncontrolled Resource Consumption) Component: backend Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite backend 7.10.6-rev39, OX App Suite backend 8.10 First fixed revision: OX App Suite backend 7.10.6-rev40, OX App Suite backend 8.11 Discovery date: 2023-02-13 Solution date: 2023-03-13 Disclosure date: 2023-06-20 CVE: CVE-2023-26432 CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) Details: SMTP capabilities allow excessive memory usage. When adding an external mail account, processing of SMTP "capabilities" responses are not limited to plausible sizes. Risk: Attacker with access to a rogue SMTP service could trigger requests that lead to excessive resource usage and eventually service unavailability. No publicly available exploits are known. Solution: We now limit accepted SMTP server response to reasonable length/size. --- Internal reference: MWB-2047 Type: CWE-400 (Uncontrolled Resource Consumption) Component: backend Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite backend 7.10.6-rev39, OX App Suite backend 8.10 First fixed revision: OX App Suite backend 7.10.6-rev40, OX App Suite backend 8.11 Discovery date: 2023-02-13 Solution date: 2023-03-13 Disclosure date: 2023-06-20 CVE: CVE-2023-26433 CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) Details: IMAP capabilities allow excessive memory usage. When adding an external mail account, processing of IMAP "capabilities" responses are not limited to plausible sizes. Risk: Attacker with access to a rogue IMAP service could trigger requests that lead to excessive resource usage and eventually service unavailability. No publicly available exploits are known. Solution: We now limit accepted IMAP server response to reasonable length/size. --- Internal reference: MWB-2048 Type: CWE-400 (Uncontrolled Resource Consumption) Component: backend Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite backend 7.10.6-rev39 First fixed revision: OX App Suite backend 7.10.6-rev40 Discovery date: 2023-02-13 Solution date: 2023-03-13 Disclosure date: 2023-06-20 CVE: CVE-2023-26434 CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) Details: POP3 capabilities allow excessive memory usage. When adding an external mail account, processing of POP3 "capabilities" responses are not limited to plausible sizes. Risk: Attacker with access to a rogue POP3 service could trigger requests that lead to excessive resource usage and eventually service unavailability. No publicly available exploits are known. Solution: We now limit accepted POP3 server response to reasonable length/size. --- Internal reference: DOCS-4662 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 7.10.6-rev7 First fixed revision: OX App Suite office 7.10.6-rev8 Discovery date: 2023-01-09 Solution date: 2023-03-13 Disclosure date: 2023-06-20 Researcher credits: Icare CVE: CVE-2023-26435 CVSS: 5.0 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N) Details: SSRF using ODT files and "draw" XML fragments. It was possible to call filesystem and network references using the local LibreOffice instance using manipulated ODT documents. Risk: Attackers could discover restricted network topology and services as well as including local files with read permissions of the open-xchange system user. This was limited to specific file-types, like images. No publicly available exploits are known. Solution: We have improved existing content filters and validators to avoid including any local resources. --- Internal reference: DOCS-4701 Type: CWE-94 (Improper Control of Generation of Code ('Code Injection')) Component: office Report confidence: Confirmed Solution status: Fixed by vendor Last affected revision: OX App Suite office 7.10.6-rev7 First fixed revision: OX App Suite office 7.10.6-rev8 Discovery date: 2023-02-03 Solution date: 2023-03-13 Disclosure date: 2023-06-20 Researcher credits: Mehmet 'mdisec' Ince CVE: CVE-2023-26436 CVSS: 8.3 (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H) Details: Insecure Deserialization on documentconverterws API lead to Remote Code Execution. Attackers with access to the "documentconverterws" API were able to inject serialized Java objects, that were not properly checked during deserialization. Access to this API endpoint is restricted to local networks by default. Risk: Arbitrary code could be injected that is being executed when processing the request. No publicly available exploits are known. Solution: A check has been introduced to restrict processing of legal and expected classes for this API. We now log a warning in case there are attempts to inject illegal classes.