Symfony possible session fixation vulnerability
CVE-2023-46733

6.5MEDIUM

Key Information:

Vendor

Symfony

Status
Symfony
Vendor
CVE Published:
10 November 2023

What is CVE-2023-46733?

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 5.4.21 and 6.2.7 and prior to versions 5.4.31 and 6.3.8, SessionStrategyListener does not migrate the session after every successful login. It does so only in case the logged in user changes by means of checking the user identifier. In some use cases, the user identifier doesn't change between the verification phase and the successful login, while the token itself changes from one type (partially-authenticated) to another (fully-authenticated). When this happens, the session id should be regenerated to prevent possible session fixations, which is not the case at the moment. As of versions 5.4.31 and 6.3.8, Symfony now checks the type of the token in addition to the user identifier before deciding whether the session id should be regenerated.

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Affected Version(s)

symfony >= 5.4.21, < 5.4.31 < 5.4.21, 5.4.31

symfony >= 6.2.7, < 6.3.8 < 6.2.7, 6.3.8

References

https://github.com/symfony/symfony/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/symfony/symfony/commit/7467bd7e3f888b3...
x_refsource_MISC
https://github.com/symfony/symfony/commit/dc356499d5ceb86...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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