CVE-2023-30861 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2023-30861 Interim 1 11 2023-09-06T23:18:45Z current 2023-05-10T23:16:51Z 2023-09-06T23:18:45Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2023-30861 Flask is a lightweight WSGI web application framework. When all of the following conditions are met, a response containing data intended for one client may be cached and subsequently sent by the proxy to other clients. If the proxy also caches `Set-Cookie` headers, it may send one client's `session` cookie to other clients. The severity depends on the application's use of the session and the proxy's behavior regarding cookies. The risk depends on all these conditions being met. 1. The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies. 2. The application sets `session.permanent = True` 3. The application does not access or modify the session at any point during a request. 4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default). 5. The application does not set a `Cache-Control` header to indicate that a page is private or should not be cached. This happens because vulnerable versions of Flask only set the `Vary: Cookie` header when the session is accessed or modified, not when it is refreshed (re-sent to update the expiration) without being accessed or modified. This issue has been fixed in versions 2.3.2 and 2.2.5. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/sle-security-updates/2023-June/015140.html E-Mail link for SUSE-CU-2023:1835-1 https://lists.suse.com/pipermail/sle-security-updates/2023-June/015143.html E-Mail link for SUSE-CU-2023:1838-1 https://lists.suse.com/pipermail/sle-security-updates/2023-June/015154.html E-Mail link for SUSE-CU-2023:1849-1 https://lists.suse.com/pipermail/sle-security-updates/2023-May/014935.html E-Mail link for SUSE-SU-2023:2263-1 https://lists.suse.com/pipermail/sle-updates/2023-July/030433.html E-Mail link for SUSE-SU-2023:2263-2 https://lists.suse.com/pipermail/sle-security-updates/2023-May/014934.html E-Mail link for SUSE-SU-2023:2264-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings Container ses/7.1/cephcsi/cephcsi:3.8.0.1.0.4.5.49 Container ses/7.1/rook/ceph:1.10.1.16.4.5.420 SUSE CaaS Platform 4.0 SUSE Enterprise Storage 7 SUSE Enterprise Storage 7.1 SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Linux Enterprise Module for Package Hub 15 SP4 SUSE Linux Enterprise Module for Package Hub 15 SP5 SUSE Linux Enterprise Real Time 15 SP3 SUSE Linux Enterprise Server 15 SP1-LTSS SUSE Linux Enterprise Server 15 SP2-LTSS SUSE Linux Enterprise Server 15 SP3-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Linux Enterprise Server 15 SP4-TERADATA SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Linux Enterprise Server 15-LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Manager Proxy 4.2 SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Manager Retail Branch Server 4.2 SUSE Linux Enterprise Module for Basesystem 15 SP4 SUSE Manager Server 4.2 SUSE Linux Enterprise Module for Basesystem 15 SP4 openSUSE Leap 15.4 openSUSE Leap 15.5 openSUSE Tumbleweed python-Flask python2-Flask-1.0.2-150100.6.3.1 python3-Flask python3-Flask-1.0.2-150100.6.3.1 python3-Flask-1.0.4-150400.3.3.1 python3-Flask-doc-1.0.4-150400.3.3.1 python310-Flask-2.2.5-1.1 python310-Flask-doc-2.2.5-1.1 python311-Flask-2.2.5-1.1 python311-Flask-doc-2.2.5-1.1 python39-Flask-2.2.5-1.1 python39-Flask-doc-2.2.5-1.1 python3-Flask-1.0.2-150100.6.3.1 as a component of Container ses/7.1/cephcsi/cephcsi:3.8.0.1.0.4.5.49 python3-Flask-1.0.2-150100.6.3.1 as a component of Container ses/7.1/rook/ceph:1.10.1.16.4.5.420 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE CaaS Platform 4.0 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Enterprise Storage 7 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Enterprise Storage 7.1 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS python3-Flask-1.0.4-150400.3.3.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP4 python3-Flask-1.0.4-150400.3.3.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP5 python2-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 python2-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Real Time 15 SP3 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server 15 SP1-LTSS python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server 15 SP2-LTSS python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server 15 SP3-LTSS python3-Flask-1.0.4-150400.3.3.1 as a component of SUSE Linux Enterprise Server 15 SP4-TERADATA python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP1 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP2 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP3 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Manager Proxy 4.2 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Manager Retail Branch Server 4.2 python3-Flask-1.0.2-150100.6.3.1 as a component of SUSE Manager Server 4.2 python3-Flask-1.0.4-150400.3.3.1 as a component of openSUSE Leap 15.4 python3-Flask-doc-1.0.4-150400.3.3.1 as a component of openSUSE Leap 15.4 python3-Flask-1.0.4-150400.3.3.1 as a component of openSUSE Leap 15.5 python3-Flask-doc-1.0.4-150400.3.3.1 as a component of openSUSE Leap 15.5 python310-Flask-2.2.5-1.1 as a component of openSUSE Tumbleweed python310-Flask-doc-2.2.5-1.1 as a component of openSUSE Tumbleweed python311-Flask-2.2.5-1.1 as a component of openSUSE Tumbleweed python311-Flask-doc-2.2.5-1.1 as a component of openSUSE Tumbleweed python39-Flask-2.2.5-1.1 as a component of openSUSE Tumbleweed python39-Flask-doc-2.2.5-1.1 as a component of openSUSE Tumbleweed python3-Flask as a component of SUSE Linux Enterprise Server 15-LTSS python-Flask as a component of SUSE Linux Enterprise Server 15-LTSS Flask is a lightweight WSGI web application framework. When all of the following conditions are met, a response containing data intended for one client may be cached and subsequently sent by the proxy to other clients. If the proxy also caches `Set-Cookie` headers, it may send one client's `session` cookie to other clients. The severity depends on the application's use of the session and the proxy's behavior regarding cookies. The risk depends on all these conditions being met. 1. The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies. 2. The application sets `session.permanent = True` 3. The application does not access or modify the session at any point during a request. 4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default). 5. The application does not set a `Cache-Control` header to indicate that a page is private or should not be cached. This happens because vulnerable versions of Flask only set the `Vary: Cookie` header when the session is accessed or modified, not when it is refreshed (re-sent to update the expiration) without being accessed or modified. This issue has been fixed in versions 2.3.2 and 2.2.5. CVE-2023-30861 Container ses/7.1/cephcsi/cephcsi:3.8.0.1.0.4.5.49:python3-Flask-1.0.2-150100.6.3.1 Container ses/7.1/rook/ceph:1.10.1.16.4.5.420:python3-Flask-1.0.2-150100.6.3.1 SUSE CaaS Platform 4.0:python3-Flask-1.0.2-150100.6.3.1 SUSE Enterprise Storage 7:python3-Flask-1.0.2-150100.6.3.1 SUSE Enterprise Storage 7.1:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Module for Basesystem 15 SP4:python3-Flask-1.0.4-150400.3.3.1 SUSE Linux Enterprise Module for Basesystem 15 SP5:python3-Flask-1.0.4-150400.3.3.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:python2-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:python2-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Real Time 15 SP3:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server 15 SP1-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server 15 SP2-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server 15 SP3-LTSS:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server 15 SP4-TERADATA:python3-Flask-1.0.4-150400.3.3.1 SUSE Linux Enterprise Server for SAP Applications 15 SP1:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server for SAP Applications 15 SP2:python3-Flask-1.0.2-150100.6.3.1 SUSE Linux Enterprise Server for SAP Applications 15 SP3:python3-Flask-1.0.2-150100.6.3.1 SUSE Manager Proxy 4.2:python3-Flask-1.0.2-150100.6.3.1 SUSE Manager Retail Branch Server 4.2:python3-Flask-1.0.2-150100.6.3.1 SUSE Manager Server 4.2:python3-Flask-1.0.2-150100.6.3.1 openSUSE Leap 15.4:python3-Flask-1.0.4-150400.3.3.1 openSUSE Leap 15.4:python3-Flask-doc-1.0.4-150400.3.3.1 openSUSE Leap 15.5:python3-Flask-1.0.4-150400.3.3.1 openSUSE Leap 15.5:python3-Flask-doc-1.0.4-150400.3.3.1 openSUSE Tumbleweed:python310-Flask-2.2.5-1.1 openSUSE Tumbleweed:python310-Flask-doc-2.2.5-1.1 openSUSE Tumbleweed:python311-Flask-2.2.5-1.1 openSUSE Tumbleweed:python311-Flask-doc-2.2.5-1.1 openSUSE Tumbleweed:python39-Flask-2.2.5-1.1 openSUSE Tumbleweed:python39-Flask-doc-2.2.5-1.1 SUSE Linux Enterprise Server 15-LTSS:python-Flask SUSE Linux Enterprise Server 15-LTSS:python3-Flask important 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N