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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:217151
[Rus]
Version
1
Class
patch
ALTXid
440441
Language
English
Severity
Critical
Title
MGASA-2023-0193 -- security update for python-flask
Description
Client 'session' cookie sent to other clients (CVE-2023-30861)
Family
unix
Platform
Mageia 8
Product
python-flask
Reference
VENDOR: MGASA-2023-0193
VENDOR: MGASA-2023-0193
Id:
MGASA-2023-0193
Reference:
https://advisories.mageia.org/MGASA-2023-0193.html
CVE: CVE-2023-30861
CVE: CVE-2023-30861
Id:
CVE-2023-30861
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-30861
Comment
: 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.
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE:
539 (Information Exposure Through Persistent Cookies)
References:
https://github.com/pallets/flask/commit/70f906c51ce49c485f1d355703e9cc3386b1cc2b (MISC)
https://github.com/pallets/flask/releases/tag/2.3.2 (MISC)
https://github.com/pallets/flask/releases/tag/2.2.5 (MISC)
https://github.com/pallets/flask/security/advisories/GHSA-m2qf-hxjv-5gpq (MISC)
https://github.com/pallets/flask/commit/afd63b16170b7c047f5758eb910c416511e9c965 (MISC)
https://www.debian.org/security/2023/dsa-5442 (MISC)
https://security.netapp.com/advisory/ntap-20230818-0006/ (MISC)
https://lists.debian.org/debian-lts-announce/2023/08/msg00024.html (MISC)
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