Vulnerability in Sensiolabs Symfony
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Sensiolabs Symfony
- Symfony — versions >= 5.4.21, < 5.4.31, >= 6.2.7, < 6.3.8
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-46733?
- CVE-2023-46733 is a medium-severity vulnerability in Sensiolabs Symfony, classified under Session Fixation. CVSS score: 6.5/10. Published 2023-11-10.
- How severe is CVE-2023-46733?
- Medium severity. CVSS v3 base score is 6.5 out of 10.