CVE-2021-41268

Cookie persistence in Symfony

Description

Symfony/SecurityBundle is the security system for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Since the rework of the Remember me cookie in version 5.3.0, the cookie is not invalidated when the user changes their password. Attackers can therefore maintain their access to the account even if the password is changed as long as they have had the chance to login once and get a valid remember me cookie. Starting with version 5.3.12, Symfony makes the password part of the signature by default. In that way, when the password changes, then the cookie is not valid anymore.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.48%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: symfony symfony
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-41268?
CVE-2021-41268 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41268?
To fix CVE-2021-41268, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41268 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-41268 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41268?
CVE-2021-41268 affects symfony symfony.
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