suse-su-2023:2263-1
Vulnerability from csaf_suse
Published
2023-05-22 10:16
Modified
2023-05-22 10:16
Summary
Security update for python-Flask
Notes
Title of the patch
Security update for python-Flask
Description of the patch
This update for python-Flask fixes the following issues:
- CVE-2023-30861: Fixed a potential cookie confusion due to incorrect
caching (bsc#1211246).
Patchnames
SUSE-2023-2263,SUSE-SLE-Module-Basesystem-15-SP4-2023-2263,SUSE-SLE-Module-Basesystem-15-SP5-2023-2263,openSUSE-SLE-15.4-2023-2263
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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"text": "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\u0027s `session` cookie to other clients. The severity depends on the application\u0027s use of the session and the proxy\u0027s behavior regarding cookies. The risk depends on all these conditions being met.\n\n1. The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies.\n2. The application sets `session.permanent = True`\n3. The application does not access or modify the session at any point during a request.\n4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default).\n5. The application does not set a `Cache-Control` header to indicate that a page is private or should not be cached.\n\nThis 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.",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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