Contributed by Jérémy Derussé in #39919.
BREACH is a security exploit against HTTPS when using HTTP compression. This kind of compression side-channel attacks are used to read some data by knowing only the size of the compressed data. Your site is at risk if attackers can read the size of your encrypted traffic and can also make any number of HTTP requests with CSRF tokens. The traditional way of mitigating this attack was to disable HTTP compression, which hurts performance significantly. Another possible solution is to ensure that CSRF tokens include some randomness, to prevent repetitive output in your responses. That’s why in Symfony 5.3 CSRF tokens are automatically randomized. This randomization process is transparent to the application, so you don’t need to configure anything and you don’t need to change your application code. If you disabled compression when using HTTPS because of this attack, upgrade to Symfony 5.3 and enable compression again to improve your site performance. This is yet another reason why using a professional framework like Symfony is better in the long run. Symfony will protect your application and your users against many common security vulnerabilities, even those you are not aware of.
Sponsor the Symfony project.Melden Sie sich an, um einen Kommentar hinzuzufügen
Andere Beiträge in dieser Gruppe
Symfony 6.4.23 has just been released. Read the Symfony upgrade guide to learn more about upgrading Symfony and use the SymfonyInsight upgrade reports to detect the code you will need to change in you
Symfony 7.2.8 has just been released. Read the Symfony upgrade guide to learn more about upgrading Symfony and use the SymfonyInsight upgrade reports to detect the code you will need to change in your
Symfony 7.3.1 has just been released. Read the Symfony upgrade guide to learn more about upgrading Symfony and use the SymfonyInsight upgrade reports to detect the code you will need to change in your
This week, development activity was intense, with many bug fixes in the maintained branches, numerous deprecation removals in the 8.0 branch, and new features added to the 7.4 branch, including tighte
Thank you for joining us at SymfonyOnline June 2025!
What a great edition of SymfonyOnline we’ve just wrapped up! 🎉
We were thrilled to welcome 300 participants from 35 different countries—a
This week, Symfony celebrated the SymfonyOnline June 2025 conference with great success. Meanwhile, development efforts focused on improving invokable commands for the upcoming Symfony 7.4 version. Th
This week, development activity focused on the upcoming Symfony 7.4 and 8.0 versions, which will deprecate and remove many features. In addition, we published a case study about Yousign. Finally, we'r
