Vulnerability identifier: #VU82998

Vulnerability risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46733

CWE-ID: CWE-384

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Symfony
Web applications / CMS

Vendor: SensioLabs

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the session fixation issue within the SessionStrategyListener. A remote attacker can gain acces to the original user's session.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Symfony: 5.4.21 - 6.3.7

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External links
http://github.com/symfony/symfony/security/advisories/GHSA-m2wj-r6g3-fxfx
http://github.com/symfony/symfony/commit/7467bd7e3f888b333102bc664b5e02ef1e7f88b9
http://github.com/symfony/symfony/commit/dc356499d5ceb86f7cf2b4c7f032eca97061ed74
http://github.com/symfony/symfony/releases/tag/v5.4.31
http://github.com/symfony/symfony/releases/tag/v6.3.8

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.